Programming and Problem Solving With C++
6th Edition
ISBN: 9781449694265
Author: Nell Dale
Publisher: Jones & Bartlett Learning
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Chapter 1, Problem 4PWE
Program Plan Intro
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Please can you help me solve this problem in Python.
Darkening an image requires adjusting its pixels toward black as a limit, whereas lightening an image requires adjusting them toward white as a limit. Because black is RGB (0, 0, 0) and white is RGB (255, 255, 255), adjusting the three RGB values of each pixel by the same amount in either direction will have the desired effect. Of course, the algorithms must avoid exceeding either limit during the adjustments.
Lightening and darkening are actually special cases of a process known as color filtering. A color filter is any RGB triple applied to an entire image. The filtering algorithm adjusts each pixel by the amounts specified in the triple. For example, you can increase the amount of red in an image by applying a color filter with a positive red value and green and blue values of 0. The filter (20, 0, 0) would make an image’s overall color slightly redder. Alternatively, you can reduce the amount of red by applying a color filter…
Implement the"paint fill"function that one might see on many image editing programs. That is, given a screen (represented by a two-dimensional array of colors), a point, and a new color, fill in the surrounding area until the color changes from the original color.
Give edgeTo after B is visited. Format your answer as {A:?, B:?, C:?, D:?, E:?, F:?, G:?, S:-}.（(Hint: the first step of the algorithm is to visit S, which should change the entries for A and B in edgeTo and distTo. The second step is to visit B, which should change the entries for C and E)）Give distTo after B is visited. Format your answer as {A:?, B:?, C:?, D:?, E:?, F:?, G:?, S:0}.Give edgeTo after Djiksta's is finished. Format your answer as {A:?, B:?, C:?, D:?, E:?, F:?, G:?, S:-}.Give distTo after Dijkstra's is finished. Format your answer as {A:?, B:?, C:?, D:?, E:?, F:?, G:?, S:0}.
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Programming and Problem Solving With C++
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