Questions tagged [color]

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1answer
239 views

How to Define the Bandwidth in Mean Shift Clustering?

I am making a program using Java todo colo quantization using mean shift clustering algorithm and the image is RGB with resolution of 512x512. I want to reduce the image file size by reducing the ...
2
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1answer
106 views

Can Mean Shift Algorithm used in color quantization?

I have a problem with deciding algorithm for color quantization. The image that I want to do color quantization is an RGB image with resolution 512 x 512. I want to reduce the color value in the pixel ...
-5
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2answers
891 views

Looking For Information about coloring/highlighting output text in python

one of the first modules I’m working on in a python program I’m putting together is a journal. I’m getting comfortable using the print function, but for this project it would be great if i Could ...
7
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1answer
2k views

Algorithms for color blending modes: hue, saturation, color, luminosity

I'm working on a JavaScript utility where I'm trying mix two colors in different ways. I basically want to cover the blend modes provided by Photoshop / the W3C spec on compositing and blending (which ...
0
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1answer
114 views

How does color search engine work?

From what I understand first you need to find the dominant colors in the images and store them inside a database. There's a script called "color thief" that does that beautifully. But chances are all ...
0
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1answer
77 views

How to change an specific part of an image colour? [closed]

I'm not so sure whether this questions fits here, but I need help in this case, cause I'm searching for days to apply this. I have a website of rugs and carpets, in this website I would like ...
1
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1answer
4k views

How to implement k-means algorithm on RGB Images?

I want to apply the k-means algorithm on an RGB image data-set. I don't know how to proceed. You can mention basic step by step flow to proceed. I do know basics of Image Processing & OpenCV.
1
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3answers
273 views

Nicest way to map RGB colors from HTML to LED

I have attached a RGB LED to a color picker on a webpage and have hit the obvious problem that though the LED takes 8-bit values (like HTML) the color rendering is very different so with the more ...
6
votes
1answer
306 views

Why are background-colors not or rarely used for syntax highlighting? [closed]

I wonder why I rarely see any IDEs or other developers that use background colors for syntaxhighlighting. One of the first things when installing and configuring a new IDE is adjusting the colors so ...
14
votes
3answers
584 views

When is it appropriate to use colour in a command-line application?

Currently I have a command-line application in C called btcwatch. It has a -C option that it can receive as an argument that compares the current price of Bitcoin with a price that was stored ...
1
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2answers
785 views

There are two types of color mixing: Additive and Subtractive. How about XOR-ive color? [closed]

There are two types of color mixing: Additive and Subtractive. http://en.wikipedia.org/wiki/Color_mixing Is is possible that color mixing model be done in XOR?
2
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1answer
2k views

Subtractive color mixing algorithm

Here is my problem: I have a set of 'n' colors including the primary colors and their codes in hexadecimal. Now given another color 'x' I wonder if it's actually possible to come up with a mix ...
19
votes
3answers
2k views

What algorithms are there for picking colors for plot lines on graphs?

I'm interested in what algorithms or rules I can programmatically implement to generate RGB or HSV colors for plotlines to keep them visually distinct from the neighbors. I know that in professional ...
1
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1answer
337 views

How to implement RGBA in 8-bit microcontroller?

I have successfully connected my microcontroller to my TV via through VGA adapter i made that convert digital to analog signals with the help of resistors. Currently i am utilizing 8 pins that I am ...
1
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1answer
2k views

How is a 256 bin HSV histogram quantised?

I am doing some research on the ScalableColor descriptor in MPEG-7 and I came across this passage: The descriptor extractions starts with the computation of the colour historgam with 25 bins in ...
3
votes
2answers
1k views

Graduated transition from Green - Yellow - Red

I am having algorithm mental block in designing a way to transition from Green to Red, as smoothly as possible with a, potentially, unknown length of time to transition. For testing purposes, I will ...
6
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2answers
4k views

Nearest color algorithm using Hex Triplet

Wikipedia has a list of colors that I am using for a basis of color names. I want to find the nearest named color given an arbitrary RGB value. For example #5D8AA8 hex triplet is "Air Force Blue". ...
3
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1answer
917 views

Is the Leptonica implementation of 'Modified Median Cut' not using the median at all?

I'm playing around a bit with image processing and decided to read up on how color quantization worked and after a bit of reading I found the Modified Median Cut Quantization algorithm. I've been ...
28
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13answers
2k views

A colourblind member of our team

My team relies a lot on colour within our code to outline features that need to be worked on (we colour lines of code that need attention). We have a close friend who is colourblind and wants to join ...
3
votes
1answer
643 views

Which UML colors should this example be represented by?

See UML colors here. Here is the example, I have following entity classes: User(name) MailBox(owner: User, label) Mail(from: User, to: User, subject, body, composeTime) MailCopy(type, from: User, ...
6
votes
6answers
15k views

Light bulb for prolonged computer use

I would like a recommendation on choosing which light-bulb type (e.g. CFL) and color temperature is best for prolonged computer usage. I am also in a field where color consistency is important so if ...
28
votes
9answers
27k views

Color schemes generation - theory and algorithms [closed]

I will be generating charts and diagrams and I am looking for some theory on color schemes and algorithm examples. Example questions: How to generate complementary or analogous colors? How to ...