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his assignment you are requested to perform the following operation on a given image.  Determine the average value of the image. Use double data type to sum every pixel and divide by the number of pixels in the image. This value will be referred as A. Then calculate the average value of pixels that are greater than A, this value will be referred as H. You need to sum and count. Likewise calculate the average of the values that are less than A: L. Then apply the following formula to each pixel. Do not forget to round and clamp.   O=(I−L)*(255−C)/(H−L)+C O is output image I is input image

his assignment you are requested to perform the following operation on a given image.  Determine the average value of the image. Use double data type to sum every pixel and divide by the number of pixels in the image. This value will be referred as A. Then calculate the average value of pixels that are greater than A, this value will be referred as H. You need to sum and count. Likewise calculate the average of the values that are less than A: L. Then apply the following formula to each pixel. Do not forget to round and clamp.   O=(I−L)*(255−C)/(H−L)+C O is output image I is input image

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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In this assignment you are requested to perform the following operation on a given image. 

Determine the average value of the image. Use double data type to sum every pixel and divide by the number of pixels in the image. This value will be referred as A. Then calculate the average value of pixels that are greater than A, this value will be referred as H. You need to sum and count. Likewise calculate the average of the values that are less than A: L. Then apply the following formula to each pixel. Do not forget to round and clamp.

 

O=(I−L)*(255−C)/(H−L)+C

O is output image

I is input image

C is the parameter of the system, try values between 1 and 127. What do you think this algorithm does?

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