(a) A camera with a CCD array of size 8 mm x 6 mm with 640 x 480 pixels is used to detect patterns on a table. If the ma

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A A Camera With A Ccd Array Of Size 8 Mm X 6 Mm With 640 X 480 Pixels Is Used To Detect Patterns On A Table If The Ma 1 (91.2 KiB) Viewed 30 times

(a) A camera with a CCD array of size 8 mm x 6 mm with 640 x 480 pixels is used to detect patterns on a table. If the magnification is 0.2, what is the size of one pixel on the object plane? At what distance, will the object be sharpest on the image if the focal length = 100 mm? Given that the diameter of the aperture opening is 5mm, calculate the depth of field of the camera. (10 marks) (b) Figure 1 shows the pixel intensities of Image A cropped from the original 8-bit grayscale image captured using a camera. This image A has a dimension of 6 x 6 pixels. Is the contrast of Image A under-exposed, over-exposed or just right? Briefly explain your answer. Design a point processing transform to convert pixels with intensities less than 10 to black and greater than 100 to white in Image A of Figure 1. There should be no change in other intensity values. 9 11 0 0 0 12 12 12 120 125 20 8 11 0 120 120 11 9 0 122 11 110 0 0 0 130 130 135 0 0 0 140 0 0 80 12 Figure 1(b): Image A (6 marks) (c) Suppose that an optical system comprises a single thin lens of focal length 35 mm. Compute the output ray coordinate at a distance 10 mm behind the lens when the input ray coordinate is at a distance 100 mm in front of the lens. 0 Calculate the image magnification. What is the image characteristics? co