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Altera_Forum's avatar
Altera_Forum
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17 years ago

linear to logarithmic conversion

Hi Guys, I need to implement Linear to Logarithmic conversion using Verilog HDL on overexposed and underexposed pictures through Look Up Tables. But, I lack information on this. Can anyone pr...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

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this is gamma correction, right? the simplest method would be a lookup table for under-exposed and one for over-exposed. for finer tuning you could make more tables or do some kind of interpolation/"fudging" between the tables and a linear curve.

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not exactly but yes it is similar to gamma correction.

can you plz explain a bit on the method you told above ...... may with a small example.

Thank you