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What would be the inverse of the following code?:  // Pixel at row r and col c (r >=0, c >= 0) unsigned char red, green, blue; unsigned char coded_red, coded_green, coded_blue; unsigned short us = (red << 8) + (blue); us = (us << 5 ) | (us >> 11); unsigned int threebytes = (us << 8) + green; threebytes ^= (101231 * c * c + 41231 * r * r); coded_red = (threebytes >> 16) & 255; coded_green = (threebytes >> 8) & 255; coded_blue = threebytes & 255;

What would be the inverse of the following code?:  // Pixel at row r and col c (r >=0, c >= 0) unsigned char red, green, blue; unsigned char coded_red, coded_green, coded_blue; unsigned short us = (red << 8) + (blue); us = (us << 5 ) | (us >> 11); unsigned int threebytes = (us << 8) + green; threebytes ^= (101231 * c * c + 41231 * r * r); coded_red = (threebytes >> 16) & 255; coded_green = (threebytes >> 8) & 255; coded_blue = threebytes & 255;

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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What would be the inverse of the following code?:

 // Pixel at row r and col c (r >=0, c >= 0) unsigned char red, green, blue; unsigned char coded_red, coded_green, coded_blue;

unsigned short us = (red << 8) + (blue); us = (us << 5 ) | (us >> 11); unsigned int threebytes = (us << 8) + green;

threebytes ^= (101231 * c * c + 41231 * r * r);

coded_red = (threebytes >> 16) & 255;

coded_green = (threebytes >> 8) & 255;

coded_blue = threebytes & 255;

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