Question
Slightly increase the image overall intensity by 15% and show the modified image. (Hint: to avoid potential issues, use tofloat() function. Here is the image:
Slightly increase the image overall intensity by 15% and show the modified image. (Hint: to avoid potential issues, use tofloat() function.
Here is the image:
Here is the tofloat() code:
function [out, revertClass] = tofloat(in)
%TOFLOAT Converts an image to floating point.
% [OUT, REVERTCLASS] = TOFLOAT(IN) converts the input image IN to
% floating-point. If IN is a double or single image, then OUT
% equals IN. Otherwise, OUT equals IM2DOUBLE(IN). REVERTCLASS is
% a function handle that can be used to convert back to the class
% of IN.
% Copyright 2002-2020 Gatesmark
% This function, and other functions in the DIPUM Toolbox, are based
% on the theoretical and practical foundations established in the
% book Digital Image Processing Using MATLAB, 3rd ed., Gatesmark
% Press, 2020.
% Book website: http://www.imageprocessingplace.com
% License: https://github.com/dipum/dipum-toolbox/blob/master/LICENSE.txt
identity = @(x) x;
todouble = @im2double;
converter_table = {'uint8', todouble, @im2uint8
'uint16', todouble, @im2uint16
'int16', todouble, @im2int16
'logical', todouble, @logical
'double', identity, identity
'single', identity, identity};
classIndex = find(strcmp(class(in), converter_table(:, 1)));
if isempty(classIndex)
error('Unsupported input image class.');
end
out = converter_table{classIndex, 2}(in);
revertClass = converter_table{classIndex, 3};
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