Image Processing

Front

Pixels get their color from a combination of which colors?

Back

red green blue

Front

What does the following code do? Options: Makes a blue filter across the entire picture, Draws a blue rectangle that is 150 pixels high and 20 pixels wide, Draws a blue rectangle that is 150 pixels wide and 20 pixels high, Changes the pixel at (50, 200) and the pixel at (50, 70) to blue

Back

Draws a blue rectangle that is 150 pixels high and 20 pixels wide

Front

What does the following code do?

Back

Turns the last 100 columns blue

Front

What does len(img) represent in line 6?

Back

The height of the image in pixels

Front

What does sum(img[r][c]) represent in line 8?

Back

The total brightness of each pixel

Front

What is the alpha channel?

Back

A fourth byte that determines the transparency of a pixel in certain types of image files

Front

Given that img is a variable that represents a 2 dimensional array of pixels, what could be a possible value of img[12][1]?

Back

[0, 80, 200]

Front

Given that img is a variable that represents a 2 dimensional array of pixels, what could be a possible value of img[16][4]?

Back

[255, 255, 255]

Front

Given that img is a variable that represents a 2 dimensional array of pixels, what could be a possible value of img[16] ?

Back

[[255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255], [255,255,255]]

Front

Given that img is a variable that represents a 2 dimensional array of pixels, what could be a possible value of img[0][4][2]?

Back

255