Convert negative rgb value to int

Asked Jan 10 '14 at 09:55

Active Jan 10 '14 at 15:40

Viewed 83 times

I'm working on a program that takes an image png, this image has been compressed using the following method (RLE).

Isolates a block of pixels into an array, and then gets each individual rgb value for each pixel in that array.

int rgb = image.getRGB(0,0);

It spits out negative number

I need to get the 1 value integer out of this negative value, because the first pixel is actually an integer that represents the total number of pixel colors that must be repeated to build the decompressed image

I try with this method :

String clr = Integer.toHexString(value).substring(2);
int n = Integer.parseInt(clr, 16);

Is there a formula, alg, method best?

edited Jan 10 '14 at 15:40

Kevin Panko

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asked Jan 10 '14 at 09:55

Hassan Bendouj

http://stackoverflow.com/questions/5526690/convert-a-raw-negative-rgb-int-value-back-to-a-3-number-rgb-value?rq=1 – StoopidDonut Jan 10 '14 at 10:00
no this older post converte rgb to 3 number of color – Hassan Bendouj Jan 10 '14 at 10:05
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Use the method PopoFibo linked, and only take the color value you need. – Nathaniel Waisbrot Jan 10 '14 at 11:10

Convert negative rgb value to int

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