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20091ee114_1_CA5 - UCLA Electrical Engineering Department...

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UCLA, Electrical Engineering Department Winter Quarter, 2009 EE 114, Part 2: Image Processing Assigned: Feb. 9, 2009 Computer Assignment #5 Due: Feb. 18, 2009 1. Introduction This assignment focuses on two-dimensional convolution. In addition, it considers peak signal to noise ratio (PSNR), a metric for comparing images. 2. Preliminary This is a brief overview of the image functions that may be helpful for this assignment. You can download the file image.tif from the course website. Loading an image ( imread ) Image can be loaded into workspace with imread functions. image = imread(‘image.tif’); Displaying an image ( imagesc ) Throughout all the computer assignments of this quarter, we will only deal with grayscale images. Grayscale images are matrices in the Matlab workspace. They can be displayed by imagesc functions with grayscale colormap. imagesc(image); colormap(gray); Cropping an image ( imcrop ) An image can be cropped by function imcrop . Imcrop crops image to a specified rectangular.
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