The subtracted image needs to be scaled, if 8-bit channel is used to display the subtracted images. So, the method of adding 255 to each pixel and then dividing by 2, has certain limits. What is/are those limits?

The truncation inherent in division by 2 causes loss in accuracy

The subtracted image needs to be scaled, if 8-bit channel is used to d

1.	The subtracted image needs to be scaled, if 8-bit channel is used to display the subtracted images. So, the method of adding 255 to each pixel and then dividing by 2, has certain limits. What is/are those limits?
A.	Very complex method
B.	Very difficult to implement
C.	The truncation inherent in division by 2 causes loss in accuracy
D.	All of the mentioned
Answer» D. All of the mentioned

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The subtracted image needs to be scaled, if 8-bit channel is used to display the subtracted images. So, the method of adding 255 to each pixel and then dividing by 2, has certain limits. What is/are those limits?

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