octave: scripts/image/rgb2hsv.m annotate

annotate scripts/image/rgb2hsv.m @ 27898:4d6d21839dfd

remove Author: jwe and Adapted-by: jwe lines from source files These lines have little meaning now in the age of modern version control systems. Files affected: url-transfer.cc, url-transfer.h, acot.m, acoth.m, acsc.m, acsch.m, asec.m, asech.m, cot.m, coth.m, csc.m, csch.m, sec.m, sech.m, cart2pol.m, cart2sph.m, deal.m, fliplr.m, flipud.m, int2str.m, logspace.m, num2str.m, pol2cart.m, rot90.m, sortrows.m, sph2cart.m, waitbar.m, doc.m, hsv2rgb.m, rgb2hsv.m, beep.m, isstr.m, setstr.m, strmatch.m, cond.m, rank.m, trace.m, bug_report.m, cast.m, delete.m, dir.m, list_primes.m, ls.m, ls_command.m, menu.m, pack.m, recycle.m, substruct.m, version.m, glpk.m, axis.m, box.m, grid.m, __axis_label__.m, text.m, title.m, view.m, xlabel.m, ylabel.m, zlabel.m, bar.m, barh.m, comet3.m, hist.m, line.m, loglog.m, mesh.m, patch.m, plot.m, polar.m, __bar__.m, __line__.m, __plt__.m, __stem__.m, semilogx.m, semilogy.m, sombrero.m, stairs.m, stem.m, surface.m, __default_plot_options__.m, __gnuplot_drawnow__.m, __next_line_color__.m, __plt_get_axis_arg__.m, __pltopt__.m, clf.m, closereq.m, gca.m, gnuplot_binary.in.m, isfigure.m, meshgrid.m, __gnuplot_draw_axes__.m, __gnuplot_draw_figure__.m, shg.m, addpref.m, getpref.m, ispref.m, loadprefs.m, prefsfile.m, saveprefs.m, rmpref.m, setpref.m, ismember.m, setdiff.m, union.m, hankel.m, hilb.m, vander.m, median.m, std.m, cstrcat.m, isletter.m, str2num.m, strcat.m, oruntests.m, rundemos.m, asctime.m, clock.m, ctime.m, date.m, etime.m, is_leap_year.m.

author	John W. Eaton <jwe@octave.org>
date	Thu, 02 Jan 2020 15:43:01 -0500
parents	00f796120a6d
children	b442ec6dda5c

rev	line source
26376 00f796120a6d maint: Update copyright dates in all source files. John W. Eaton <jwe@octave.org> parents: 25054 diff changeset	1 ## Copyright (C) 1999-2019 Kai Habel
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	2 ##
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	3 ## This file is part of Octave.
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	4 ##
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23220 diff changeset	5 ## Octave is free software: you can redistribute it and/or modify it
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	6 ## under the terms of the GNU General Public License as published by
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23220 diff changeset	7 ## the Free Software Foundation, either version 3 of the License, or
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22323 diff changeset	8 ## (at your option) any later version.
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	9 ##
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	10 ## Octave is distributed in the hope that it will be useful, but
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22323 diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22323 diff changeset	13 ## GNU General Public License for more details.
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	14 ##
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	15 ## You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 7001 diff changeset	16 ## along with Octave; see the file COPYING. If not, see
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23220 diff changeset	17 ## <https://www.gnu.org/licenses/>.
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	18
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	19 ## -- texinfo --
22766 6033e2e4d5ea doc: Clarify inputs and outputs for rgb2hsv. Rik <rik@octave.org> parents: 22323 diff changeset	20 ## @deftypefn {} {@var{hsv_map} =} rgb2hsv (@var{rgb_map})
6033e2e4d5ea doc: Clarify inputs and outputs for rgb2hsv. Rik <rik@octave.org> parents: 22323 diff changeset	21 ## @deftypefnx {} {@var{hsv_img} =} rgb2hsv (@var{rgb_img})
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	22 ## Transform a colormap or image from RGB to HSV color space.
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	23 ##
14260 1f911333ed3d doc: Update docstrings for functions in image/ directory Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	24 ## A color in the RGB space consists of red, green, and blue intensities.
1f911333ed3d doc: Update docstrings for functions in image/ directory Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	25 ##
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	26 ## A color in HSV space is represented by hue, saturation and value
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	27 ## (brightness) levels in a cylindrical coordinate system. Hue is the
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	28 ## azimuth and describes the dominant color. Saturation is the radial
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	29 ## distance and gives the amount of hue mixed into the color. Value is
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	30 ## the height and is the amount of light in the color.
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	31 ##
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	32 ## Output class and size will be the same as input.
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	33 ##
24610 3ad53e4793fc rgb2gray: New function to convert RGB images to grayscale images. Rik <rik@octave.org> parents: 24534 diff changeset	34 ## @seealso{hsv2rgb, rgb2ind, rgb2gray}
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	35 ## @end deftypefn
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	36
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	37 ## Author: Kai Habel <kai.habel@gmx.de>
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	38
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	39 function hsv = rgb2hsv (rgb)
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	40
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	41 if (nargin != 1)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5642 diff changeset	42 print_usage ();
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	43 endif
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	44
20676 1672bb8882dd Remove unused arguments in private functions for colorspace arguments. Carnë Draug <carandraug@octave.org> parents: 20665 diff changeset	45 [rgb, sz, is_im, is_nd] ...
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	46 = colorspace_conversion_input_check ("rgb2hsv", "RGB", rgb);
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	47
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	48 ## get the max and min for each row
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	49 s = min (rgb, [], 2);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	50 v = max (rgb, [], 2);
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	51
3904 6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	52 ## set hue to zero for undefined values (gray has no hue)
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	53 h = zeros (rows (rgb), 1);
3904 6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	54 notgray = (s != v);
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	55
3904 6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	56 ## blue hue
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	57 idx = (v == rgb(:,3) & notgray);
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	58 if (any (idx))
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	59 h(idx) = 2/3 + 1/6 * (rgb(idx,1) - rgb(idx,2)) ./ (v(idx) - s(idx));
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	60 endif
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	61
3904 6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	62 ## green hue
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	63 idx = (v == rgb(:,2) & notgray);
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	64 if (any (idx))
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	65 h(idx) = 1/3 + 1/6 * (rgb(idx,3) - rgb(idx,1)) ./ (v(idx) - s(idx));
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	66 endif
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	67
3904 6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	68 ## red hue
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	69 idx = (v == rgb(:,1) & notgray);
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	70 if (any (idx))
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	71 h(idx) = 1/6 * (rgb(idx,2) - rgb(idx,3)) ./ (v(idx) - s(idx));
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	72 endif
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	73 h(h < 0) += 1; # correct for negative red
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	74
3904 6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	75 ## set the saturation
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	76 s(! notgray) = 0;
6b00ac653c0f [project @ 2002-04-24 04:56:10 by jwe] jwe parents: 3803 diff changeset	77 s(notgray) = 1 - s(notgray) ./ v(notgray);
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	78
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	79 hsv = [h, s, v];
20676 1672bb8882dd Remove unused arguments in private functions for colorspace arguments. Carnë Draug <carandraug@octave.org> parents: 20665 diff changeset	80 hsv = colorspace_conversion_revert (hsv, sz, is_im, is_nd);
3803 63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	81
63c75bc3db82 [project @ 2001-02-28 08:24:40 by jwe] jwe parents: diff changeset	82 endfunction
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	83
21759 b002b4331a12 maint: Use two newlines after endfunction and start of BIST tests. Rik <rik@octave.org> parents: 21580 diff changeset	84
19833 9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions. Rik <rik@octave.org> parents: 19697 diff changeset	85 ## Test pure colors and gray
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	86 %!assert (rgb2hsv ([1 0 0]), [0 1 1])
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	87 %!assert (rgb2hsv ([0 1 0]), [1/3 1 1])
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	88 %!assert (rgb2hsv ([0 0 1]), [2/3 1 1])
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	89 %!assert (rgb2hsv ([1 1 0]), [1/6 1 1])
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	90 %!assert (rgb2hsv ([0 1 1]), [1/2 1 1])
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	91 %!assert (rgb2hsv ([1 0 1]), [5/6 1 1])
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	92 %!assert (rgb2hsv ([0.5 0.5 0.5]), [0 0 0.5])
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	93
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	94 ## Test tolarant input checking on floats
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	95 %!assert (rgb2hsv ([1.5 1 1]), [0 1/3 1.5], eps)
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	96
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	97 %!test
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	98 %! rgb_map = rand (64, 3);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	99 %! assert (hsv2rgb (rgb2hsv (rgb_map)), rgb_map, 1e-6);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	100
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	101 %!test
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	102 %! rgb_img = rand (64, 64, 3);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	103 %! assert (hsv2rgb (rgb2hsv (rgb_img)), rgb_img, 1e-6);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	104
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	105 ## support sparse input
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	106 %!assert (rgb2hsv (sparse ([0 0 1])), sparse ([2/3 1 1]))
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	107 %!assert (rgb2hsv (sparse ([0 1 1])), sparse ([1/2 1 1]))
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	108 %!assert (rgb2hsv (sparse ([1 1 1])), sparse ([0 0 1]))
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	109
19833 9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions. Rik <rik@octave.org> parents: 19697 diff changeset	110 ## Test input validation
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	111 %!error rgb2hsv ()
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	112 %!error rgb2hsv (1,2)
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	113 %!error <invalid data type 'cell'> rgb2hsv ({1})
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	114 %!error <RGB must be a colormap or RGB image> rgb2hsv (ones (2,2))
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14260 diff changeset	115
20369 131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	116 ## Test ND input
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	117 %!test
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	118 %! rgb = rand (16, 16, 3, 5);
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	119 %! hsv = zeros (size (rgb));
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	120 %! for i = 1:5
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	121 %! hsv(:,:,:,i) = rgb2hsv (rgb(:,:,:,i));
131ce8cfaa80 Relax input in functions that convert between colorspaces (bug #45456) Carnë Draug <carandraug@octave.org> parents: 19833 diff changeset	122 %! endfor
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	123 %! assert (rgb2hsv (rgb), hsv);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	124
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	125 ## Test output class and size for input images.
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	126 ## Most of the tests only test for colormap input.
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	127
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	128 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	129 %! hsv = rgb2hsv (rand (10, 10, 3));
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	130 %! assert (class (hsv), "double");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	131 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	132
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	133 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	134 %! hsv = rgb2hsv (rand (10, 10, 3, "single"));
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	135 %! assert (class (hsv), "single");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	136 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	137
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	138 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	139 %! rgb = (rand (10, 10, 3) * 3 ) - 0.5; # values outside range [0 1]
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	140 %! hsv = rgb2hsv (rgb);
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	141 %! assert (class (hsv), "double");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	142 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	143
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	144 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	145 %! rgb = (rand (10, 10, 3, "single") * 3 ) - 0.5; # values outside range [0 1]
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	146 %! hsv = rgb2hsv (rgb);
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	147 %! assert (class (hsv), "single");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	148 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	149
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	150 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	151 %! hsv = rgb2hsv (randi ([0 255], 10, 10, 3, "uint8"));
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	152 %! assert (class (hsv), "double");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	153 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	154
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	155 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	156 %! hsv = rgb2hsv (randi ([0 65535], 10, 10, 3, "uint16"));
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	157 %! assert (class (hsv), "double");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	158 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	159
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	160 %!test
21443 acd6e203031d Alter BIST tests stop emitting warnings during runtests invocation. Rik <rik@octave.org> parents: 20852 diff changeset	161 %! hsv = rgb2hsv (randi ([-128 127], 10, 10, 3, "int8"));
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	162 %! assert (class (hsv), "double");
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	163 %! assert (size (hsv), [10 10 3]);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	164
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	165 %!test
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	166 %! rgb_double = reshape ([1 0 1 .5 1 1 0 .5 0 1 1 .5], [2 2 3]);
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	167 %! rgb_uint8 = reshape (uint8 ([255 0 255 128 255 255 0 128 0 255 255 128]),
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	168 %! [2 2 3]);
20665 67e6343cd29a Add support for colorspace conversion of signed integers images (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20664 diff changeset	169 %! rgb_int16 = int16 (double (rgb_double * uint16 (65535)) -32768);
20664 a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	170 %! expected = reshape ([1/6 1/2 5/6 0 1 1 1 0 1 1 1 .5], [2 2 3]);
a278de349250 Add more tests for color space conversion functions (patch #8709) Carnë Draug <carandraug@octave.org> parents: 20663 diff changeset	171 %!
21580 ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	172 %! assert (rgb2hsv (rgb_double), expected);
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	173 %! assert (rgb2hsv (rgb_uint8), expected, 0.005);
ecce63c99c3f maint: Add semicolons to terminate code in %! blocks. Rik <rik@octave.org> parents: 21443 diff changeset	174 %! assert (rgb2hsv (single (rgb_double)), single (expected));

Mercurial > octave

annotate scripts/image/rgb2hsv.m @ 27898:4d6d21839dfd