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Computer Vision & Image Processing. G. Andy Chang Department of Mathematics & Statistics Youngstown State University Youngstown, Ohio. Human Vision. Illusion. 1. Green > Red 2. Green = Red 3. Green < Red. Illusion (Human Vision). Vision System. Human Vision Qualitative
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Computer Vision & Image Processing G. Andy Chang Department of Mathematics & Statistics Youngstown State University Youngstown, Ohio
Human Vision Illusion 1. Green > Red 2. Green = Red 3. Green < Red
Vision System Human Vision • Qualitative • Comparative Computer Vision • Quantitative • 320 pixels • 334 pixels Pixel (combination of Picture & Element) is the smallest element of a display which can be assigned a color.
Old design Wafer • Human hair thickness is about 100 micron.
28 =256 0 ~ 255
Original Image (564×380)8-bit Gray Scale Image (256 gray levels)
3-bit Gray Scale Image (0 – 7) EXCEL WORKSHEET_AM EXCEL WORKSHEET_PM
Original Image (564×380)8-bit Gray Scale Image (256 = 28 gray levels)
Inverted Image (564×380)8-bit Gray Scale Image 0 255 1 254 2 253 3 252 4 251 5 250 …
Object Identification (Binary Thresholding)
Oyster Size Measurement (a) (b) a) Original Image b) Binary Image of Projected Area