- <-- Moderator's note: This topic has been split off from the thread “Scolorq dithering?”. -->
You can find a free photoshop plugin which includes scolorq and is compatible with XNView in
brodriguez wrote:You can find a free photoshop plugin which includes scolorq and is compatible with XNView in
Blas Rodriguez Somoza (Ximagic Quantizer) wrote:Ximage Quantizer is a photoshop plugin for image color quantization (color reduction) & dithering.
- Provides 10 color quantization methods.
- Provides 11 dithering methods.
- Calculates RMSE of the transformation.
- Allow choice of colorspace RGB or YCbCr
- Can be also used in other compatible plugin hosts (The Gimp, Irfanview, Xnview, Photo paint ....)
- Allow you to apply the algorithm to the selected portion of the image and not only to the full image.
- Important: It reduces the number of colors in a image, but don't change a RGB image to indexed color. If you want to use it to change an image from RGB to index color, you should use your image tool to change the image mode, after running XImagic quantizer.
brodriguez wrote:This plugin tries to be a learning as well as working tool and this is the reason it includes not only the best methods, but all those that could be of interest.
Let me try to help with the two questions I found
XnTriq - About getting the same results from two runs.
SColorQ uses random numbers to fill the initial palette, which is very important for the result. As a consecuence the results are diferent in each run. The random seed used is a second clock which means the results are similar when you make two runs very near in time.
In quantization methods, there is very common to start with an initial random palette. Older methods such as Octree, medians and olders ones don't need this approach.
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