Image Processing Quiz

Identify the following set of neighbor pixel coordinates to a pixel p at coordinate (x, y).

(x+1, y+1), (x+1, y-1), (x-1, y+1), (x-1, y-1)

• Diagonal neighbors

• 4-neighbors of p

• 8-neighbors

• cross neighbors

If a grayscale image has a resolution of 800 x 600 pixels, and each pixel requires 1 byte for intensity information, Calculate the number of bytes needed to store the entire grayscale image.

• 800,000 bytes

• 600,000 bytes

• 480,000 bytes

• 1,200,000 bytes

Choose a smoothing filter.

• Median filter

• Butterworth high-pass filter

• High-pass filter

• Gaussian high-pass filter

Choose the negative of an image with L gray levels, Where r is value of input pixel, and s is value of processed pixel.

• s=L-1-r

• s=L+1-r

• s=L-1+r

• s=L+1+r

Select the image processing technique used to generate an output image with a specified histogram.

• Histogram Matching (Specification)

• Histogram Equalization

• Contrast Stretching

• Image Segmentation

In a video game, when a character moves to the right, the background image is programmed to shift left to simulate movement. This effect is done by moving every pixel in the background image 10 pixels to the left. Select the geometric transformation is responsible for this shift in image position.

• Shearing

• Scaling

• Rotation

• Translation

Choose the geometric transformation that reduces the size of the image.

• 2D rotation

• 2D Scaling

• Translation

• Addition

Choose the geometric transformation equation that represents scaling.

• P’=R.P

• P’=S.P

• P’=P+T

• P’=S-P

Compute the chessboard distance between the two pixel coordinates p(4,5) and s(2,3).

• 2

• 4

• 2.83

• 0.90

Compute the storage requirement of a 256 x 256, 8 bit gray image.

• 192KB

• 60KB

• 64KB

• 90KB