0630db2bf1
More relnotes
2021-11-04 14:55:23 +00:00
f097945b2e
Add version history
2021-11-04 14:46:53 +00:00
aebb21263e
Update docs
2021-11-04 14:35:14 +00:00
387500a9b4
Remove stray file
2021-11-04 14:34:44 +00:00
bd19d27bd3
Add a script to regenerate image conversions for example images, and add a .po disk image
2021-11-04 14:32:58 +00:00
7e68847bfe
nit
2021-11-04 14:31:33 +00:00
1010b64272
Fix shift_pixel_window when shift_right_by > window_width
2021-11-03 15:19:29 +00:00
34ae40ac2d
Fix a bug with output for non-ntsc palette
2021-11-03 15:17:57 +00:00
b7174778e6
Oops, no that was wrong. I forgot to cross-check against OpenEmulator <o>
2021-11-03 12:40:22 +00:00
bf76271d75
NTSC conversion should be using YIQ space instead of YUV, which seems
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to explain several fudge factors I needed to include to match colours.
2021-11-02 23:28:58 +00:00
df0adec8aa
Fix typo
2021-11-02 22:24:47 +00:00
d35cdbc877
Switch remaining palettes to be indexed by (n-bit pixel value, NTSC
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phase) and update the comments to explain the encoding scheme.
2021-11-02 22:15:13 +00:00
52bd35e875
Update comment
2021-11-02 22:15:09 +00:00
3544bd74c8
Update comment
2021-11-02 22:14:59 +00:00
1ed565ff8d
Fix a bug with palette depths < 8
2021-11-02 22:14:42 +00:00
0f1ec6f6f2
Optimize memory a bit
2021-11-02 21:25:00 +00:00
4fbb0faf84
Fixes
2021-11-02 15:47:37 +00:00
9dbf413733
Tidy
2021-11-02 15:45:20 +00:00
e84dfb59f9
Tidy a bit
2021-11-02 15:26:43 +00:00
b63fd81c07
Unify DHGRScreen implementations
2021-11-02 15:23:23 +00:00
75a3c6bc48
Simplify image_to_rgb and remove the need for DOTS and DOTS_TO_INDEX
2021-11-02 15:14:22 +00:00
809b975e6e
Return a bitmap directly from dither_image. This removes the need to
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deal with n-bit encodings at all in DHGRScreen
2021-11-02 14:42:00 +00:00
b7e8c69f64
More descriptive variables
2021-11-02 13:48:53 +00:00
cf69dc9cf2
Bounds check lookahead
2021-11-02 13:42:23 +00:00
8cfee55b1d
Get rid of support for 140px mode, it was only useful as a demo of why
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other converters have the wrong basic approach.
2021-11-02 13:40:32 +00:00
d442baf1f1
Tidy a bit
2021-11-02 12:30:43 +00:00
5675fac40d
Clean up a bit and accommodate palette depth in sliding pixel window
2021-11-02 12:29:30 +00:00
24644658cb
Tidy a bit
2021-11-01 12:10:02 +00:00
0c588f7489
Tidy
2021-07-19 18:40:16 +01:00
e5c49b3518
Floyd-Steinberg is working well now, and gives better detail
2021-07-19 18:39:38 +01:00
feefdb5dc6
Use .npy format for RGB to CAM16UCS conversion matrix, and get rid of precomputed CIE2000 distances
2021-07-19 18:35:44 +01:00
e979df03bc
Nope, don't need XYZ
2021-07-19 18:13:43 +01:00
8b500b16cb
Dither in XYZ representation but use CAM16UCS for colour differences.
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This gives the best of both worlds: dithering in a linear space, with
good (and fast) perceptual error differences
TBD: would linear RGB work as well as XYZ?
2021-07-19 17:54:46 +01:00
4984df7f7a
Tidy up and optimize a bit
2021-07-19 13:21:32 +01:00
e08f25e4cc
Simplify
2021-07-19 12:55:50 +01:00
20a73ffb8a
Checkpoint - working again, and simpler
2021-07-19 12:33:49 +01:00
508ce134aa
Try to fix how we compute the next pixel palette for 8-bit mode.
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Still not sure this is correct.
2021-07-19 09:58:22 +01:00
70074a2942
Support arbitrary gamma correction of input image
2021-07-19 09:57:26 +01:00
7a3adea025
Try cam16UCS instead
2021-07-15 14:25:32 +01:00
4fcda908bd
WIP - use colourspacious to perform image dithering in CAM02_UCS
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colour space, which is supposed to be perceptually uniform. i.e. we
can use Euclidean distance instead of CIEDE2000
2021-07-15 13:58:22 +01:00
9bbb9fda7c
Fix typos in x transition labels
2021-07-15 09:41:57 +01:00
a593639606
Allow parametrizing gamma
2021-05-28 11:24:05 +01:00
07a358d49b
Fix --all to be an optional boolean argument, and fix a deprecation warning (h/t: 4am)
2021-03-15 21:42:21 +00:00
fb6a0f90ab
whitespace
2021-03-15 21:42:01 +00:00
99242d455f
Fix warning
2021-03-15 21:41:39 +00:00
7a7923503f
With recent optimizations converter became ~2.1x faster, so
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--lookahead=8 is a reasonable new default.
2021-03-15 17:55:21 +00:00
5487b4aa7e
Note disk space requirements and tweak usage
2021-03-15 17:50:56 +00:00
527f6504f7
Add comments and tidy up some more
2021-03-15 17:22:14 +00:00
101d974d50
Use hyphens in option names so that --no-boolean-option is
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consistently hyphenated.
2021-03-15 17:21:22 +00:00
ede063a21b
No need to pattern to have third axis of shape 1
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Minor optimization to not compute error_fraction 3 times
Tidy a bit
2021-03-15 16:22:55 +00:00
kris