In the process of converting a raster graphic file, the number of colors decreased from 1024 to 32.
| June 2, 2021 | education
In the process of converting a raster graphic file, the number of colors decreased from 1024 to 32. How many times has the information volume of the file decreased?
To encode 1024 colors requires 1024 = 2 ^ i, i = 10 bits, 10 bits per pixel.
To encode 32 colors, it takes 32 = 2 ^ i, i = 5 bits per pixel. The volume of the image has decreased by 10/5 = 2 times.
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