[Tutor] Python Image library
keridee at jayco.net
Thu Jul 19 01:38:45 CEST 2007
You know the height and the width of the image, no?
So you know that every 'width' number of pixels will start a new row.
So if you wanted say the fifth row down, second pixel, how would you find
The 1st line: 'width' number of pixels
The 2nd line: 'width' number of pixels
The 3rd line: 'width number of pixels
The 4th line: 'width' number of pixels
The 5th line: 2 pixels in from the left
Add those up ~ width+width+width+width+2
That number is the index to use to get the pixel at coords (2,5)
pixel = getdata()
For this example.
Work out a more general solution for yourself please.
> getdata() returns a flattened list, [n]
> but i am not sure how to access it.
> when I want to get rgb from a window of 100,200,
> get data starts from 0 (0~99, 0~199)
> the point of x,y = 2, 1
> do I put in
> pixel ?
> it's actually not the case @_@
> what should I put in ?
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