Color segmentation by Delta E color difference

User draws region and this finds pixels in the image with a similar color, using Delta E.

Description

Demo to perform very, very simple color detection in LAB color space. The RGB image is converted to LAB color space and then the user draws some freehand-drawn irregularly shaped region to identify a color. The Delta E (the color difference in LAB color space) is then calculated for every pixel in the image between that pixel's color and the average LAB color of the drawn region. The user can then specify a number that says how close to that color would they like to be. The software will then find all pixels within that specified Delta E of the color of the drawn region.

• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 7.12 (2011a)

[dion]

can i use it for index image???

[Image Analyst]

You can use it for indexed images if you convert the indexed image into an RGB image with ind2rgb().

[arman Yaraee]

It doesn't work. Whenever I draw a region it gives error of too many output arguments!!

[Image Analyst]

arman: How did you run it? What was the exact error message? I just downloaded it and ran it, and it was fine. Click my name above and then click the "Contact Author" link to send me this information.

[Marium Malik]

Have messaged you the error

[pratibha]

 

[Image Analyst]

Marium: I don't recall getting anything from you.