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PDL::Transform 2.4.3
PDL::Transform is a Perl module that coordinate transforms, image warping, and N-D functions. more>>
PDL::Transform is a Perl module that coordinate transforms, image warping, and N-D functions.
SYNOPSIS
use PDL::Transform;
my $t = new PDL::Transform:: ( )
$out = $t->apply($in) # Apply transform to some N-vectors (Transform method)
$out = $in->apply($t) # Apply transform to some N-vectors (PDL method)
$im1 = $t->map($im); # Transform image coordinates (Transform method)
$im1 = $im->map($t); # Transform image coordinates (PDL method)
$t2 = $t->compose($t1); # compose two transforms
$t2 = $t x $t1; # compose two transforms (by analogy to matrix mult.)
$t3 = $t2->inverse(); # invert a transform
$t3 = !$t2; # invert a transform (by analogy to logical "not")
PDL::Transform is a convenient way to represent coordinate transformations and resample images. It embodies functions mapping R^N -> R^M, both with and without inverses. Provision exists for parametrizing functions, and for composing them. You can use this part of the Transform object to keep track of arbitrary functions mapping R^N -> R^M with or without inverses.
The simplest way to use a Transform object is to transform vector data between coordinate systems. The apply method accepts a PDL whose 0th dimension is coordinate index (all other dimensions are threaded over) and transforms the vectors into the new coordinate system.
Transform also includes image resampling, via the map method. You define a coordinate transform using a Transform object, then use it to remap an image PDL. The output is a remapped, resampled image.
You can define and compose several transformations, then apply them all at once to an image. The image is interpolated only once, when all the composed transformations are applied.
In keeping with standard practice, but somewhat counterintuitively, the map engine uses the inverse transform to map coordinates FROM the destination dataspace (or image plane) TO the source dataspace; hence PDL::Transform keeps track of both the forward and inverse transform.
For terseness and convenience, most of the constructors are exported into the current package with the name t_ , so the following (for example) are synonyms:
$t = new PDL::Transform::Radial(); # Long way
$t = t_radial(); # Short way
Several math operators are overloaded, so that you can compose and invert functions with expression syntax instead of method syntax (see below).
<<lessSYNOPSIS
use PDL::Transform;
my $t = new PDL::Transform:: ( )
$out = $t->apply($in) # Apply transform to some N-vectors (Transform method)
$out = $in->apply($t) # Apply transform to some N-vectors (PDL method)
$im1 = $t->map($im); # Transform image coordinates (Transform method)
$im1 = $im->map($t); # Transform image coordinates (PDL method)
$t2 = $t->compose($t1); # compose two transforms
$t2 = $t x $t1; # compose two transforms (by analogy to matrix mult.)
$t3 = $t2->inverse(); # invert a transform
$t3 = !$t2; # invert a transform (by analogy to logical "not")
PDL::Transform is a convenient way to represent coordinate transformations and resample images. It embodies functions mapping R^N -> R^M, both with and without inverses. Provision exists for parametrizing functions, and for composing them. You can use this part of the Transform object to keep track of arbitrary functions mapping R^N -> R^M with or without inverses.
The simplest way to use a Transform object is to transform vector data between coordinate systems. The apply method accepts a PDL whose 0th dimension is coordinate index (all other dimensions are threaded over) and transforms the vectors into the new coordinate system.
Transform also includes image resampling, via the map method. You define a coordinate transform using a Transform object, then use it to remap an image PDL. The output is a remapped, resampled image.
You can define and compose several transformations, then apply them all at once to an image. The image is interpolated only once, when all the composed transformations are applied.
In keeping with standard practice, but somewhat counterintuitively, the map engine uses the inverse transform to map coordinates FROM the destination dataspace (or image plane) TO the source dataspace; hence PDL::Transform keeps track of both the forward and inverse transform.
For terseness and convenience, most of the constructors are exported into the current package with the name t_ , so the following (for example) are synonyms:
$t = new PDL::Transform::Radial(); # Long way
$t = t_radial(); # Short way
Several math operators are overloaded, so that you can compose and invert functions with expression syntax instead of method syntax (see below).
Download (2.1MB)
Added: 2007-07-03 License: Perl Artistic License Price:
847 downloads
Grid::Transform 0.02
Grid::Transform is a Perl module with fast grid transformations. more>>
Grid::Transform is a Perl module with fast grid transformations.
SYNOPSIS
use Grid::Transform;
$g = Grid::Transform->new([a..o], rows=>5);
$g->rotate_270->flip_vertical;
print join( , $g->grid), "n";
The Grid::Transform module provides fast methods to transform a grid of arbitrary data types.
METHODS
$g = Grid::Transform->new( @grid, rows=>num, columns=>num )
Creates a new Grid::Transform object. The first argument is a reference to a 1-dimensional array representing a 2-dimensional "row major" (row by row) grid. (A column major grid is simply the counter transpose of a row major one.) The grid may be composed of arbitrary data types. The original array is never modified- all transformations operate on a copy.
At least one dimension must be specified. If the grid and dimensions do not produce a rectangular grid extra empty elements ("") will be added to the grid.
$g2 = $g->copy
Returns a copy of the original Grid::Transform object.
These methods get or set the grid attributes:
@grid = $g->grid
$grid = $g->grid
@grid = $g->grid( @grid )
In list context, returns an array representing the current grid. In scalar context, returns a reference to the array. Accepts an array reference representing a new grid. The new grid will be resized if the dimensions of the previous grid do not match.
$g->rows
$g->rows( $num )
Returns the current number of rows.
$g->columns
$g->cols
$g->columns( $num )
Returns the current number of columns.
All transform methods return the Grid::Transform object, so transforms can be chained.
$g->rotate_90
$g->rotate90
Rotates the grid 90 degrees clock-wise.
a b c d e f g h i j k l a b c d i e a
| e f g h -> j f b
i e a j f b k g c l h d i j k l k g c
l h d
$g->rotate_180
$g->rotate180
Rotates the grid 180 degrees clock-wise.
a b c d e f g h i j k l a b c d l k j i
| e f g h -> h g f e
l k j i h g f e d c b a i j k l d c b a
$g->rotate_270
$g->rotate270
Rotates the grid 270 degrees clock-wise.
a b c d e f g h i j k l a b c d d h l
| e f g h -> c g k
d h l c g k b f j a e i i j k l b f j
a e i
$g->flip_horizontal
$g->mirror_horizontal
Flips the grid across the horizontal axis.
a b c d e f g h i j k l a b c d i j k l
| e f g h -> e f g h
i j k l e f g h a b c d i j k l a b c d
$g->flip_vertical
$g->mirror_vertical
Flips the grid across the vertical axis.
a b c d e f g h i j k l a b c d d c b a
| e f g h -> h g f e
d c b a h g f e l k j i i j k l l k j i
$g->transpose
Flips the grid across the vertical axis and then rotates it 90 degress clock-wise.
a b c d e f g h i j k l a b c d l h d
| e f g h -> k g c
l h d k g c j f b i e a i j k l j f b
i e a
$g->counter_transpose
$g->countertranspose
Flips the grid across the horizontal axis and then rotates it 90 degrees clock-wise.
a b c d e f g h i j k l a b c d a e i
| e f g h -> b f j
a e i b f j c g k d h l i j k l c g k
d h l
$g->fold_right
Folds the columns to the right.
a b c d e f g h i j k l a b c d b c d a
| e f g h -> f g e h
b c a d f g e h j k i l i j k l j k i l
$g->fold_left
Folds the columns to the left.
a b c d e f g h i j k l a b c d d a c b
| e f g h -> h e g f
d a c b h e g f l i k j i j k l l i k j
<<lessSYNOPSIS
use Grid::Transform;
$g = Grid::Transform->new([a..o], rows=>5);
$g->rotate_270->flip_vertical;
print join( , $g->grid), "n";
The Grid::Transform module provides fast methods to transform a grid of arbitrary data types.
METHODS
$g = Grid::Transform->new( @grid, rows=>num, columns=>num )
Creates a new Grid::Transform object. The first argument is a reference to a 1-dimensional array representing a 2-dimensional "row major" (row by row) grid. (A column major grid is simply the counter transpose of a row major one.) The grid may be composed of arbitrary data types. The original array is never modified- all transformations operate on a copy.
At least one dimension must be specified. If the grid and dimensions do not produce a rectangular grid extra empty elements ("") will be added to the grid.
$g2 = $g->copy
Returns a copy of the original Grid::Transform object.
These methods get or set the grid attributes:
@grid = $g->grid
$grid = $g->grid
@grid = $g->grid( @grid )
In list context, returns an array representing the current grid. In scalar context, returns a reference to the array. Accepts an array reference representing a new grid. The new grid will be resized if the dimensions of the previous grid do not match.
$g->rows
$g->rows( $num )
Returns the current number of rows.
$g->columns
$g->cols
$g->columns( $num )
Returns the current number of columns.
All transform methods return the Grid::Transform object, so transforms can be chained.
$g->rotate_90
$g->rotate90
Rotates the grid 90 degrees clock-wise.
a b c d e f g h i j k l a b c d i e a
| e f g h -> j f b
i e a j f b k g c l h d i j k l k g c
l h d
$g->rotate_180
$g->rotate180
Rotates the grid 180 degrees clock-wise.
a b c d e f g h i j k l a b c d l k j i
| e f g h -> h g f e
l k j i h g f e d c b a i j k l d c b a
$g->rotate_270
$g->rotate270
Rotates the grid 270 degrees clock-wise.
a b c d e f g h i j k l a b c d d h l
| e f g h -> c g k
d h l c g k b f j a e i i j k l b f j
a e i
$g->flip_horizontal
$g->mirror_horizontal
Flips the grid across the horizontal axis.
a b c d e f g h i j k l a b c d i j k l
| e f g h -> e f g h
i j k l e f g h a b c d i j k l a b c d
$g->flip_vertical
$g->mirror_vertical
Flips the grid across the vertical axis.
a b c d e f g h i j k l a b c d d c b a
| e f g h -> h g f e
d c b a h g f e l k j i i j k l l k j i
$g->transpose
Flips the grid across the vertical axis and then rotates it 90 degress clock-wise.
a b c d e f g h i j k l a b c d l h d
| e f g h -> k g c
l h d k g c j f b i e a i j k l j f b
i e a
$g->counter_transpose
$g->countertranspose
Flips the grid across the horizontal axis and then rotates it 90 degrees clock-wise.
a b c d e f g h i j k l a b c d a e i
| e f g h -> b f j
a e i b f j c g k d h l i j k l c g k
d h l
$g->fold_right
Folds the columns to the right.
a b c d e f g h i j k l a b c d b c d a
| e f g h -> f g e h
b c a d f g e h j k i l i j k l j k i l
$g->fold_left
Folds the columns to the left.
a b c d e f g h i j k l a b c d d a c b
| e f g h -> h e g f
d a c b h e g f l i k j i j k l l i k j
Download (0.036MB)
Added: 2007-05-18 License: Perl Artistic License Price:
890 downloads
Transcode 1.0.3
Transcode is a suite of command line utilities for transcoding video and audio codecs. more>>
Transcode is a suite of command line utilities for transcoding video and audio codecs, and for converting beween different container formats. Transcode can decode and encode many audio and video formats, e.g.
- MPEG-1/2
- MPEG-4(-part 3) (also DivX and XviD variants)
- Quicktime / MPEG-PS (dvd) (decode only)
- MPEG-1-layer-1/2/3 audio
- AC3 audio
Transcode has a variety of video and audio pre and post-processing filters, including (but not limited to):
- video de-interlacing
- audio resampling
- framerate conversion
- smoothing
- cutting
Transcode can import DVDs on-the-fly, or record from Video4Linux (including V4L2 video capturing) devices.
A number of modules are included to enable import of DVDs on-the-fly, Video4Linux (including V4L2 video capturing), MPEG elementary streams (ES) or program streams (VOB), MPEG1/2/4 video, Digital Video (DV), YUV4MPEG streams, Nuppel Video (NUV), quicktime (MOV), MPEG audio layer-1/2/3, WAVE, DIVX, MJPEG, and raw or compressed (pass-through) video frames.
A number of export modules for enable writing DivX ;-), DivX 4.02/5.xx, XviD, Digital Video, MPEG-1/2 or uncompressed AVI files with MPEG, AC3 (pass-through) or PCM audio. More file formats and codecs for audio/video import are supported by the MPlayer and avifile import modules (exporting with avifile is restricted to video codecs, with MPEG/PCM or AC3 (pass-through) audio provided by transcode). Limited DVD subtitle rendering is also available.
Its modular concept is intended to provide flexibility and easy user extensibility to include other video/audio codecs or file types. A set of tools is available to extract, demultiplex and decode the sources into raw video/audio streams for import, non AVI-file export modules for writing single frames (PPM) or YUV4MPEG streams, auto-probing and scanning your sources and to enable post-processing of AVI files, including header fixing, merging multiple files or splitting large AVI files to fit on a CD.
Transcode runs on UN*X like systems like Linux, BSD, and MacOSX.
Transcode loads shared library modules that are responsible for feeding it with raw streams and encoding the frames:
The Import Modules for audio/video decoding are loaded with dlopen system call and are responsible for starting the video and audio streams (directly or via the popen system call) and have a single function interface to the main program. The import is handled by a thread that buffers the video/audio frames.
The main program transcode currently performs a number of simple video/audio frame manipulations (in this order) or allows simple pass-through of raw frame data:
Video:
- cut out arbitray frame region for processing
- de-interlace video frame
- fast enlarging of video width/height by a multiple of 32 rows/column up to 1024x768
- fast reduction of video width/height by a multiple of 32 rows/column
- high-quality resizing with filter
- cut out arbitray frame region for encoding
- rescale (downsample) video width/height by a power of 2
- flip video frame upside down
- mirror image of video frame
- swap R and B bytes in video frame
- transform to b/w video frame
- apply gamma correction
- anti-alias video frame
Audio:
- change the volume of the audio stream
- resample audio stream
- swap byte order in audio stream
- sync video with audio frames (V=0|A=N, V=1|A=N+1,...)
- Filter Plugins:
- Additional effects are available via external filter plugins loaded with option "-J".
The Export Modules for audio/video encoding are loaded via the dlopen system call and the encoder loop is started for the selected frames. In most cases audio and video are handled by the same module.
Enhancements:
- This release includes only critical hotfixes.
- The main highlight is compatibilty with newer releases of ffmpeg libraries.
- Some filters have been updated.
<<less- MPEG-1/2
- MPEG-4(-part 3) (also DivX and XviD variants)
- Quicktime / MPEG-PS (dvd) (decode only)
- MPEG-1-layer-1/2/3 audio
- AC3 audio
Transcode has a variety of video and audio pre and post-processing filters, including (but not limited to):
- video de-interlacing
- audio resampling
- framerate conversion
- smoothing
- cutting
Transcode can import DVDs on-the-fly, or record from Video4Linux (including V4L2 video capturing) devices.
A number of modules are included to enable import of DVDs on-the-fly, Video4Linux (including V4L2 video capturing), MPEG elementary streams (ES) or program streams (VOB), MPEG1/2/4 video, Digital Video (DV), YUV4MPEG streams, Nuppel Video (NUV), quicktime (MOV), MPEG audio layer-1/2/3, WAVE, DIVX, MJPEG, and raw or compressed (pass-through) video frames.
A number of export modules for enable writing DivX ;-), DivX 4.02/5.xx, XviD, Digital Video, MPEG-1/2 or uncompressed AVI files with MPEG, AC3 (pass-through) or PCM audio. More file formats and codecs for audio/video import are supported by the MPlayer and avifile import modules (exporting with avifile is restricted to video codecs, with MPEG/PCM or AC3 (pass-through) audio provided by transcode). Limited DVD subtitle rendering is also available.
Its modular concept is intended to provide flexibility and easy user extensibility to include other video/audio codecs or file types. A set of tools is available to extract, demultiplex and decode the sources into raw video/audio streams for import, non AVI-file export modules for writing single frames (PPM) or YUV4MPEG streams, auto-probing and scanning your sources and to enable post-processing of AVI files, including header fixing, merging multiple files or splitting large AVI files to fit on a CD.
Transcode runs on UN*X like systems like Linux, BSD, and MacOSX.
Transcode loads shared library modules that are responsible for feeding it with raw streams and encoding the frames:
The Import Modules for audio/video decoding are loaded with dlopen system call and are responsible for starting the video and audio streams (directly or via the popen system call) and have a single function interface to the main program. The import is handled by a thread that buffers the video/audio frames.
The main program transcode currently performs a number of simple video/audio frame manipulations (in this order) or allows simple pass-through of raw frame data:
Video:
- cut out arbitray frame region for processing
- de-interlace video frame
- fast enlarging of video width/height by a multiple of 32 rows/column up to 1024x768
- fast reduction of video width/height by a multiple of 32 rows/column
- high-quality resizing with filter
- cut out arbitray frame region for encoding
- rescale (downsample) video width/height by a power of 2
- flip video frame upside down
- mirror image of video frame
- swap R and B bytes in video frame
- transform to b/w video frame
- apply gamma correction
- anti-alias video frame
Audio:
- change the volume of the audio stream
- resample audio stream
- swap byte order in audio stream
- sync video with audio frames (V=0|A=N, V=1|A=N+1,...)
- Filter Plugins:
- Additional effects are available via external filter plugins loaded with option "-J".
The Export Modules for audio/video encoding are loaded via the dlopen system call and the encoder loop is started for the selected frames. In most cases audio and video are handled by the same module.
Enhancements:
- This release includes only critical hotfixes.
- The main highlight is compatibilty with newer releases of ffmpeg libraries.
- Some filters have been updated.
Download (2.2MB)
Added: 2007-04-17 License: GPL (GNU General Public License) Price:
560 downloads
GNOME Video Arcade 0.4.2
GNOME Video Arcade is a simple xmame front-end for the GNOME Desktop Environment. more>>
GNOME Video Arcade is a simple xmame front-end for the GNOME Desktop Environment.
Just getting this project off the ground. Im hoping to create a simple and easy-to-use xmame front-end that is not just another mame32 clone.
This project is aimed at casual gamers like myself that just want to play classic arcade games on their desktop.
<<lessJust getting this project off the ground. Im hoping to create a simple and easy-to-use xmame front-end that is not just another mame32 clone.
This project is aimed at casual gamers like myself that just want to play classic arcade games on their desktop.
Download (0.33MB)
Added: 2007-08-05 License: GPL (GNU General Public License) Price:
815 downloads
FFmpeg::Stream::Video 5704
FFmpeg::Stream::Video is a video stream from a (multi)media stream group. more>>
FFmpeg::Stream::Video is a video stream from a (multi)media stream group.
SYNOPSIS
$ff = FFmpeg->new(); #see FFmpeg
#...
$sg = $ff->create_streamgroup(); #see FFmpeg
$st = ($sg->streams())[0]; #this is a FFmpeg::Stream
Objects of this class are not intended to be instantiated directly by the end user. Access FFmpeg::Stream::Video objects using methods in FFmpeg::StreamGroup. See FFmpeg::StreamGroup for more information.
This class represents a video stream in a multimedia stream group. General stream attributes can be found in the FFmpeg::Stream class.
<<lessSYNOPSIS
$ff = FFmpeg->new(); #see FFmpeg
#...
$sg = $ff->create_streamgroup(); #see FFmpeg
$st = ($sg->streams())[0]; #this is a FFmpeg::Stream
Objects of this class are not intended to be instantiated directly by the end user. Access FFmpeg::Stream::Video objects using methods in FFmpeg::StreamGroup. See FFmpeg::StreamGroup for more information.
This class represents a video stream in a multimedia stream group. General stream attributes can be found in the FFmpeg::Stream class.
Download (0.94MB)
Added: 2006-07-20 License: GPL (GNU General Public License) Price:
690 downloads
Get YouTube Video 1.3c
Get YouTube Video is a service menu for KDE. more>>
Get YouTube Video is a service menu for KDE.
Usage:
Right-click onto a link to a YouTube video or at the background of the YouTube site showing the video and choose action -> Download YouTube Video -> ...
Install:
cd ~/.kde/share/apps/konqueror/servicemenus/
tar xvzf /path/to/youtube-servicemenu.tar.gz
I made some modifications to the YouTube Service Menu. It didnt work for me, so I looked at the source. I added a differnent method to guess the video_id and I added additional parameters to the query string to download the video.
The query-string trick is:
video_id is a part of the site-url, in which the video is embedded:
video_ids = set(re.findall(www.youtube.com/v/([-A-Za-z0-9_]+), data))
or
m = re.search(video_id=(?P [-A-Za-z0-9_]+), data)
or
m = re.search(v=(?P [-A-Za-z0-9_]+), data)
Then I do:
url = "http://www.youtube.com/watch?v=%s" % video_id
Now url points to a site in which the video will be embedded, so I can apply following regular expression to its contens:
m = re.search(watch_fullscreen?(?P .*?)&fs=1&title=" + "(?P
<<lessUsage:
Right-click onto a link to a YouTube video or at the background of the YouTube site showing the video and choose action -> Download YouTube Video -> ...
Install:
cd ~/.kde/share/apps/konqueror/servicemenus/
tar xvzf /path/to/youtube-servicemenu.tar.gz
I made some modifications to the YouTube Service Menu. It didnt work for me, so I looked at the source. I added a differnent method to guess the video_id and I added additional parameters to the query string to download the video.
The query-string trick is:
video_id is a part of the site-url, in which the video is embedded:
video_ids = set(re.findall(www.youtube.com/v/([-A-Za-z0-9_]+), data))
or
m = re.search(video_id=(?P [-A-Za-z0-9_]+), data)
or
m = re.search(v=(?P [-A-Za-z0-9_]+), data)
Then I do:
url = "http://www.youtube.com/watch?v=%s" % video_id
Now url points to a site in which the video will be embedded, so I can apply following regular expression to its contens:
m = re.search(watch_fullscreen?(?P .*?)&fs=1&title=" + "(?P
Download (0.003MB)
Added: 2007-03-05 License: GPL (GNU General Public License) Price:
3227 downloads
Amarok Video Player 0.1
Amarok Video Player adds a PlayVideo/Play menu item to the context menu which runs KMPlayer. more>>
I like using Amarok for managing my podcasts but I wasnt able to play my video podcasts.
Amarok Video Player adds a PlayVideo/Play menu item to the context menu which runs KMPlayer.
Edit the script to change KMplayer to another video player.
<<lessAmarok Video Player adds a PlayVideo/Play menu item to the context menu which runs KMPlayer.
Edit the script to change KMplayer to another video player.
Download (MB)
Added: 2006-06-26 License: GPL (GNU General Public License) Price:
1271 downloads
File::Headerinfo::Video 0.03
File::Headerinfo::Video is an extractor of useful information from video files. more>>
File::Headerinfo::Video is an extractor of useful information from video files.
File::Headerinfo::Video uses Video::Info to read the headers of video clips (of various kinds) and a few audio files, and extract from them the useful information we crave.
File::Headerinfo::Video can handle all the types that Video::Info can handle, including quicktime files, mpegs, DivX, AVI and ASF files.
<<lessFile::Headerinfo::Video uses Video::Info to read the headers of video clips (of various kinds) and a few audio files, and extract from them the useful information we crave.
File::Headerinfo::Video can handle all the types that Video::Info can handle, including quicktime files, mpegs, DivX, AVI and ASF files.
Download (0.047MB)
Added: 2006-07-20 License: Perl Artistic License Price:
1196 downloads
PDL::Transform::Cartography 2.4.3
PDL::Transform::Cartography Perl module contains useful cartographic projections. more>>
PDL::Transform::Cartography Perl module contains useful cartographic projections.
SYNOPSIS
# make a Mercator map of Earth
use PDL::Transform::Cartography;
$a = earth_coast();
$a = graticule(10,2)->glue(1,$a);
$t = t_mercator;
$w = pgwin(xs);
$w->lines($t->apply($a)->clean_lines());
PDL::Transform::Cartography includes a variety of useful cartographic and observing projections (mappings of the surface of a sphere), including reprojected observer coordinates. See PDL::Transform for more information about image transforms in general.
Cartographic transformations are used for projecting not just terrestrial maps, but also any nearly spherical surface including the Sun, the Celestial sphere, various moons and planets, distant stars, etc. They also are useful for interpreting scientific images, which are themselves generally projections of a sphere onto a flat focal plane (e.g. the t_gnomonic projection).
Unless otherwise noted, all the transformations in this file convert from (theta,phi) coordinates on the unit sphere (e.g. (lon,lat) on a planet or (RA,dec) on the celestial sphere) into some sort of projected coordinates, and have inverse transformations that convert back to (theta,phi). This is equivalent to working from the equidistant cylindrical (or "plate caree") projection, if you are a cartography wonk.
The projected coordinates are generally in units of body radii (radians), so that multiplying the output by the scale of the map yields physical units that are correct wherever the scale is correct for that projection. For example, areas should be correct everywhere in the authalic projections; and linear scales are correct along meridians in the equidistant projections and along the standard parallels in all the projections.
The transformations that are authalic (equal-area), conformal (equal-angle), azimuthal (circularly symmetric), or perspective (true perspective on a focal plane from some viewpoint) are marked. The first two categories are mutually exclusive for all but the "unit sphere" 3-D projection.
Extra dimensions tacked on to each point to be transformed are, in general, ignored. That is so that you can add on an extra index to keep track of pen color. For example, earth_coast returns a 3x< n > piddle containing (lon, lat, pen) at each list location. Transforming the vector list retains the pen value as the first index after the dimensional directions.
<<lessSYNOPSIS
# make a Mercator map of Earth
use PDL::Transform::Cartography;
$a = earth_coast();
$a = graticule(10,2)->glue(1,$a);
$t = t_mercator;
$w = pgwin(xs);
$w->lines($t->apply($a)->clean_lines());
PDL::Transform::Cartography includes a variety of useful cartographic and observing projections (mappings of the surface of a sphere), including reprojected observer coordinates. See PDL::Transform for more information about image transforms in general.
Cartographic transformations are used for projecting not just terrestrial maps, but also any nearly spherical surface including the Sun, the Celestial sphere, various moons and planets, distant stars, etc. They also are useful for interpreting scientific images, which are themselves generally projections of a sphere onto a flat focal plane (e.g. the t_gnomonic projection).
Unless otherwise noted, all the transformations in this file convert from (theta,phi) coordinates on the unit sphere (e.g. (lon,lat) on a planet or (RA,dec) on the celestial sphere) into some sort of projected coordinates, and have inverse transformations that convert back to (theta,phi). This is equivalent to working from the equidistant cylindrical (or "plate caree") projection, if you are a cartography wonk.
The projected coordinates are generally in units of body radii (radians), so that multiplying the output by the scale of the map yields physical units that are correct wherever the scale is correct for that projection. For example, areas should be correct everywhere in the authalic projections; and linear scales are correct along meridians in the equidistant projections and along the standard parallels in all the projections.
The transformations that are authalic (equal-area), conformal (equal-angle), azimuthal (circularly symmetric), or perspective (true perspective on a focal plane from some viewpoint) are marked. The first two categories are mutually exclusive for all but the "unit sphere" 3-D projection.
Extra dimensions tacked on to each point to be transformed are, in general, ignored. That is so that you can add on an extra index to keep track of pen color. For example, earth_coast returns a 3x< n > piddle containing (lon, lat, pen) at each list location. Transforming the vector list retains the pen value as the first index after the dimensional directions.
Download (2.1MB)
Added: 2007-07-21 License: Perl Artistic License Price:
3943 downloads
Gnome Play Video in Totem 0.1
Gnome Play Video in Totem allows Gnome Users to view video or audio externally in Totem. more>>
Many users prefer Gnome Window Manager but cant go without Amarok. Gnome Play Video in Totem allows Gnome Users to view video or audio externally in Totem.
This is very useful for Video Podcasts.
<<lessThis is very useful for Video Podcasts.
Download (MB)
Added: 2006-07-17 License: GPL (GNU General Public License) Price:
1200 downloads
Ook? Video Ook! 0.6.5
Ook? Video Ook! is a Firefox extension that enables you to download embedded videos. more>>
Ook? Video Ook! is a Firefox extension that enables you to download embedded videos.
Several systems are supported such as YouTube, Google Video, Pornotube, Metacafe and many more.
Main features:
- just one click downloading (just set a target folder on the options dialog once and then click on the status icon or the button where active).
- DownThemAll! integration for better download experience
- file renaming after video title (if you want so)
- files can be stored in a specific folder
- customizable toolbar button
- hideable status icon indicates which specific pages are supported: you can also check the About dialog to get a general idea
- send your requests for sites support or other comments directly from the extension (Im working on the server side right now)
- new support can be added on the fly using the autoupdate feature
<<lessSeveral systems are supported such as YouTube, Google Video, Pornotube, Metacafe and many more.
Main features:
- just one click downloading (just set a target folder on the options dialog once and then click on the status icon or the button where active).
- DownThemAll! integration for better download experience
- file renaming after video title (if you want so)
- files can be stored in a specific folder
- customizable toolbar button
- hideable status icon indicates which specific pages are supported: you can also check the About dialog to get a general idea
- send your requests for sites support or other comments directly from the extension (Im working on the server side right now)
- new support can be added on the fly using the autoupdate feature
Download (0.089MB)
Added: 2007-04-09 License: MPL (Mozilla Public License) Price:
928 downloads
SDL::Video 2.1.3
SDL::Video is a SDL perl extension. more>>
SDL::Video is a SDL perl extension.
SYNOPSIS
$video = new SDL::Video ( -name => pr0n.mpg );
SDL::Video adds support for MPEG video to your SDL Perl application. Videos are objects bound to surfaces, whose playback is controled through the objects interface.
METHODS
SDL::Video::error() returns any error messages associated with playback
SDL::Video::audio(bool) enables or disables audio playback, (on by default)
SDL::Video::video(bool) enables or disable video playback, (on by default)
SDL::Video::loop(bool) enables or disable playback looping (off by default)
SDL::Video::volume(int) set the volume as per the mixer volume
SDL::Video:display(surface) binds the clip to a display surface
SDL::Video::scale([x,y]|[surface]|int) scales the clip by either x,y factors, scales to the image dimensions, or a single scalar.
SDL::Video::play() plays the video clip, call SDL::Video::display() before playing
SDL::Video::pause() pauses video playback
SDL::Video::stop() stops video playback
SDL::Video::rewind() resets the clip to the beginning
SDL::Video::seek(offset) seeks to a particular byte offset
SDL::Video::skip(time) skips to a particular time
SDL::Video::region(rect) takes a SDL::Rect and defines the display area
SDL::Video::frame(int) renders a specific frame to the screen
SDL::Video::info() returns a new SDL::MPEG object reflecting the current status
SDL::Video::status() returns either SMPEG_PLAYING or SMPEG_STOPPED or SMPEG_ERROR
<<lessSYNOPSIS
$video = new SDL::Video ( -name => pr0n.mpg );
SDL::Video adds support for MPEG video to your SDL Perl application. Videos are objects bound to surfaces, whose playback is controled through the objects interface.
METHODS
SDL::Video::error() returns any error messages associated with playback
SDL::Video::audio(bool) enables or disables audio playback, (on by default)
SDL::Video::video(bool) enables or disable video playback, (on by default)
SDL::Video::loop(bool) enables or disable playback looping (off by default)
SDL::Video::volume(int) set the volume as per the mixer volume
SDL::Video:display(surface) binds the clip to a display surface
SDL::Video::scale([x,y]|[surface]|int) scales the clip by either x,y factors, scales to the image dimensions, or a single scalar.
SDL::Video::play() plays the video clip, call SDL::Video::display() before playing
SDL::Video::pause() pauses video playback
SDL::Video::stop() stops video playback
SDL::Video::rewind() resets the clip to the beginning
SDL::Video::seek(offset) seeks to a particular byte offset
SDL::Video::skip(time) skips to a particular time
SDL::Video::region(rect) takes a SDL::Rect and defines the display area
SDL::Video::frame(int) renders a specific frame to the screen
SDL::Video::info() returns a new SDL::MPEG object reflecting the current status
SDL::Video::status() returns either SMPEG_PLAYING or SMPEG_STOPPED or SMPEG_ERROR
Download (0.76MB)
Added: 2006-07-21 License: Perl Artistic License Price:
1201 downloads
MPEG-2 Video Tools 0.1
mpeg2videotools is a C library and set of tools for encoding, decoding, verification and analysis of MPEG-2 video. more>>
mpeg2videotools is a C library and set of tools for encoding, decoding, verification and analysis of MPEG-2 video. It supports 422 Profile and High Profile bitstreams. A PSNR tool is included for comparing uncompressed video to encoded MPEG-2 video.
The library will provide a C API and be implemented in C. Platforms supported will be popular Unices and Linux, MS Windows and MacOSX. autoconf and automake will be used to achieve portability for most platforms. Decoded bitstreams will be displayed using X11 server for Unix and native Windows API for MS Windows.
Included is an encoder and decoder application which are useful for creating compliant bitstreams and decoding and verifying MPEG-ES, MPEG-PS, MPEG-PES and MPEG-TS bitstreams.
A number of important improvements over the original SSG code have already been made:
display on TrueColor visuals (16, 24, 32 bit displays)
decoding of MPEG-TS streams
decoding of broken streams which do not start with a required start code
autoconf build
MS Windows display
a library API to enable its use in other projects (ImageMagick and the AAF SDK come to mind)
MIAMI is an MPEG-2 video codec library which aims to be a complete implementation of the ISO/IEC 13812-2:2000 standard. The priority is completeness and correctness rather than speed. Included is an encoder and a decoder for MPEG-ES,PS,PES,TS bitstreams.
Enhancements:
- changed function decs to ANSI style
- added const qualifier to suitable function args
<<lessThe library will provide a C API and be implemented in C. Platforms supported will be popular Unices and Linux, MS Windows and MacOSX. autoconf and automake will be used to achieve portability for most platforms. Decoded bitstreams will be displayed using X11 server for Unix and native Windows API for MS Windows.
Included is an encoder and decoder application which are useful for creating compliant bitstreams and decoding and verifying MPEG-ES, MPEG-PS, MPEG-PES and MPEG-TS bitstreams.
A number of important improvements over the original SSG code have already been made:
display on TrueColor visuals (16, 24, 32 bit displays)
decoding of MPEG-TS streams
decoding of broken streams which do not start with a required start code
autoconf build
MS Windows display
a library API to enable its use in other projects (ImageMagick and the AAF SDK come to mind)
MIAMI is an MPEG-2 video codec library which aims to be a complete implementation of the ISO/IEC 13812-2:2000 standard. The priority is completeness and correctness rather than speed. Included is an encoder and a decoder for MPEG-ES,PS,PES,TS bitstreams.
Enhancements:
- changed function decs to ANSI style
- added const qualifier to suitable function args
Download (0.15MB)
Added: 2006-07-28 License: GPL (GNU General Public License) Price:
1199 downloads
DVD Home Video Project 0.4.0.1
DVD Home Video Project is a tool that provides a simple, quick way to transform video on a DV camcorder into a DVD. more>>
DVD Home Video Project is a tool that provides a simple, quick way to transform video on a DV camcorder into a fully functional DVD, including a menu with optional background images and music.
<<less Download (0.18MB)
Added: 2007-01-14 License: GPL (GNU General Public License) Price:
1017 downloads
CAD::Drawing::Manipulate::Transform 0.26
CAD::Drawing::Manipulate::Transform is a Perl module with Matrix methods for CAD::Drawing. more>>
CAD::Drawing::Manipulate::Transform is a Perl module with Matrix methods for CAD::Drawing.
Provides 3D transformation methods (based on traditional matrix algorithms) for Drawing.pm objects.
Coordinate System
All of these methods assume a RIGHT-HANDED coordinate system. If you are using a left-handed coordinate system, you are going to have trouble, trouble, trouble. We arent making video games here!
<<lessProvides 3D transformation methods (based on traditional matrix algorithms) for Drawing.pm objects.
Coordinate System
All of these methods assume a RIGHT-HANDED coordinate system. If you are using a left-handed coordinate system, you are going to have trouble, trouble, trouble. We arent making video games here!
Download (0.039MB)
Added: 2007-03-16 License: GPL (GNU General Public License) Price:
953 downloads
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