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Simplified further, raising an exception in get_value instead of returning None. |
shedskin |
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Used more explicit coding practices to help Shedskin. |
shedskin |
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Introduced a separate main program for potential Shedskin analysis. |
shedskin |
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Moved various activities to their own functions. |
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Propagate errors to horizontally-adjacent pixels for nicer dithering. |
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Added tag snapshot-20151009 for changeset 4d2d36f84941 |
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Removed the square function, made saturation/desaturation options float-based. |
snapshot-20151009 |
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Fixed option handling at the end of the argument list. |
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Changed darken/brighten to use numeric parameters. |
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Added parameterisation of the darken and brighten options. |
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Removed the colour cache: entries seemed to acquire rounded probabilities. |
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Removed the nearest function. |
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Initialise the extra function properly for module usage. |
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Attempt to find the next best combination of colours when some pixel values |
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Balancing is just simplifying the probabilities. |
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Handle hopeless cases of no appropriate colours by picking an arbitrary colour. |
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Made the experimental square function application slightly cleaner. |
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Added documentation and copyright/licensing details. |
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Reduced the propagated error by half. |
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Reduced the propagated error by half. |
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Spread any error across two pixels on the following row. |
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Fixed the complement compensation code which cannot have had any effect. |
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Cache colour lookup results and avoid unnecessary pixel operations. |
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Added options for verifying the number of colours per row, half-resolution |
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Propagated colour errors between rows to determine the best colours. |
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Introduced compensation to complementary colours for those removed. |
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Introduced a distance-based approach to obtain suitable alternative colours. |
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Integrated the squaring of contributions as an option. |
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Merged branches. |
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Fixed the limiting of colour exchange. |
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Limit colour exchange to those below a certain frequency threshold. |
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Limit colour exchange to those below a certain frequency threshold. |
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Permit a broader exchange of colours. |
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Fixed colour exchange. |
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Use the square of each scaled colour value to diminish the image intensity. |
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Introduced random colour exchange when too many colours are needed. |
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Changed the test for the most prominent pair to sum complement contributions. |
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Experiment with different complementary pairs when reducing contributions. |
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Added a "balancing" function to remove primary/secondary complement pairs, thus |
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Adopt a more thorough model of colour selection. |
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Experiment with replacing colours with black and white. |
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Sum colour probabilities instead of counting requested colours. |
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Use a proper main program! |
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Fixed the preview filename. |
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Added experiments with PIL's dithering/quantizing, summing colour probabilities, |
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Simplified get_value to use probabilities instead of pixel positions. |
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Experiment with combining more than two colours at once for an input colour. |
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Reduced the frequency of the second colour in the dithering pattern. |
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Experiment with calculating the dithering factor using the sum of the lengths of |
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Choose the nearest alternative colours to the original colour. |
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Permit stronger saturation and desaturation using multiple option flags. |
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Fixed saturation and added desaturation support. |
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Added image saturation support. |
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Changed the approach, introducing dithering with the "vertex colours" and a |
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Impose a maximum height on portrait images. |
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Adjusted the colourmap slightly. |
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Propagated various colourmap fixes. |
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Prevent unnecessary darkening of blue. |
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Added automatic rotation detection. |
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Switched to the more advanced colour model. Added automatic height sizing and |
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