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In how many picture elements the test surface is divided if a high contrast video system captures the image of an interference pattern?

(a) 455336

(b) 55536

(c) 65536

(d) 75536

The question was asked in semester exam.

My question is taken from Grazing Incident Technique to Evaluate Surface Flatness in division Machine Vision Systems of Engineering Metrology

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The correct option is (c) 65536

Explanation: If a high contrast video system is used to capture images of the interference pattern then it divides the test surface into 65,536 picture pixels or picture elements. The map or pixel map is superimposed over the interference pattern and its intensity profile is recorded.

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