Sorting colors
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Hi, I have a list of colors (with RGB value and name). I need to sort them according to the RGB. The list is expected as linear (1 dimensional). Sorting means, similar color (for eg., shades of blue) should come nearby. From googling I found that CIELAB color space is better to use for this. But even though I converted to CIELAB and do a lot of experiments, I couldn't sort successfully. If you have some suggestions or guidelines please share. Thank you.
- ns ami -
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Hi, I have a list of colors (with RGB value and name). I need to sort them according to the RGB. The list is expected as linear (1 dimensional). Sorting means, similar color (for eg., shades of blue) should come nearby. From googling I found that CIELAB color space is better to use for this. But even though I converted to CIELAB and do a lot of experiments, I couldn't sort successfully. If you have some suggestions or guidelines please share. Thank you.
- ns ami -
I don't think there is a really good solution to your quest. First of all you have to decide what order you really want. If you have 6 colors (dark green, light green, dark blue, light blue, dark red, light red), what would you want as a result? Once you decided that, it wouldn't be too hard to implement it; the probable approach is giving each color a numeric value which probably would be calculated from two color aspects, e.g.
256 * hue + saturation(each aspect assumed to be between 0 and 255). However I can't imagine a good order for the example given earlier. :)Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum
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I don't think there is a really good solution to your quest. First of all you have to decide what order you really want. If you have 6 colors (dark green, light green, dark blue, light blue, dark red, light red), what would you want as a result? Once you decided that, it wouldn't be too hard to implement it; the probable approach is giving each color a numeric value which probably would be calculated from two color aspects, e.g.
256 * hue + saturation(each aspect assumed to be between 0 and 255). However I can't imagine a good order for the example given earlier. :)Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum
Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.
Thank you for your reply. As you mentioned, the order can be based on hue. I have already done some experiments with that. If we use HSV or HSL color model, and then the priority is as hue > sat > val/lum, still the order was not satisfying. Then I tried CIELAB, but have no idea on how to sort the colors in this color space. In some sites, it is said that this color space is best for our (human) perspective. I just want to get an order in the appearance of colors. I doubt, it is not so easy to sort and list the colors in one dimension. Trying again and again... :)
- ns ami -