What is the range of double??

Is it necessary to convert the uint8 data type to double for processing any image??

Answer 1

[David Sanchez]

A colour image has to be < height x width x 3 > uint8 matrix.

[Jan]

No, color images can be stored as double array also.

Answer 2

[Iain]

No.

Some image processing functions will need it to be converted.

The range of double is plus and minus 0, 10^-318 to 10^318, with about 16 significant figures.

[Jan]

But the range used for color images is from 0 to 1 inclusively. Therefore there is no strong relation between the question and this correct statement.

Answer 3

[Jan]

It depends on the detail hidden in the term "processing". A lot of functions work with UINT8 also, but some don't.