CEG 4158 Lecture Notes - Lecture 9: Grayscale, Sound
2 Dec 2018
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An optical encoder is attached on the shaft of a round wheel having a circumference of 21 cm. The opaque disk of the encoder is perforated with two series of 1000 transparent slots uniformely distributed over 2 parallel rows around the disk. f m c. 2 e c n e r e m u c r i c. Considering the intensity image presented below where the numbers correspond to gray levels (0 being black and 4 being white). 3 3: plot the intensity histogram for this image and clearly identify the variables and the scales used for each axis. Sensors and perception: determine the value(s) of proper threshold(s) for segmenting this image. Discuss the expected result from the application of the threshold(s) and sketch the shape of the segments. Considering the digital grayscale image (0=black, 1=white) below: Manually apply an averaging filter (mean filter) by convolving the following 3x3 mask, f[i,j], with the original image:
