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PixelChecksum variance

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#1 ·  Posted (edited)

I've searched the forum but couldn't find an answer to the questions I have.

Does the PixelChechsum function return a similar checksum for two scans that have approximately the same pixels?

For instance: If I was scanning a pink area and it went to light pink, would the checksum stay somewhat the same - as opposed to if the area went to black?

Also, I noticed Pixelchecksum can take 5 options but there isn't any documentation for the fifth one.

PixelChecksum ( left, top, right, bottom [, step] )

What is step?

Thanks in advance!

Edited by FL-

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:idiot: noob

 

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A simple 'no' would have sufficed.

What is the 'step' parameter on a Pixelchecksum?

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What is the 'step' parameter on a Pixelchecksum?

<{POST_SNAPBACK}>

PixelChecksum

--------------------------------------------------------------------------------

Generates a checksum for a region of pixels.

PixelChecksum ( left, top, right, bottom [, step] )

Parameters

left left coordinate of rectangle.

top top coordinate of rectangle.

right right coordinate of rectangle.

bottom bottom coordinate of rectangle.

step (Optional) Instead of checksumming each pixel use a value larger than 1 to skip pixels (for speed). E.g. A value of 2 will only check every other pixel. Default is 1.


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