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inputScale limitation in CIPixellate

I'm using the CIPixellate filter to simulate machine vision through differing sensor array grids. This means I need to be able to convert an input image to 1x1, 2x2, 4x4, 8x8, 16x16, etc., up to full resolution.

Instead of providing some sort of "resultBlocks" argument, the CIPixellate filter uses an "inputScale" argument, which goes from 1 to 100. So, starting with an input image of 800x800, the lowest pixellation value I can achieve is 8x8.

How can I achieve 1x1, 2x2, and 4x4 pixellations? I also have cases that use larger images. Is it possible to go beyond the 100 maximum for inputScale?

Roland

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