Question

What is the value of the central pixel after an averaging process is applied 0 0 0 54 132 140 69 15 0 0 0 0 o 183 243 251 251 248 189 82 0 0 0 108 245 255 255 255 255 250 169 450 0 215 254 255 255 255 255 255 218 123 0 0 243 255 255 255 255 255 255 231 145 0 194 253 255 255 255 255 255 209 107 0 0 75 248 255 255 255 255 252 167390 0 0 143 212 247 250 222 172 83 0 0 0 0 0 113 174 179 130 48 0 00 An image has grey levels in the range 82 to 231. The contrast is enhanced using contrast spreading, where the new grey levels are in the range 0 to 255. What would the new values be for pixels which had original values of 114?

Answer 1

value of central pixel after averaging process is 255

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The new value for 114 is calculated as follows:

new value = (114-82)*((255-0)/(231-82)) = 133.57 = 105.4