A SplitTone Color Curves (*.cc) for BW images...
Posted: October 23rd, 2014, 3:56 pm
I recently had the occasion to restore a vintage faded sepia print from the early 1900's and re-discovered from my archives a SplitTone ColorCurves file that I adapted from a Photoshop tutorial somewhere/sometime past... ...the suggested *.cc curves may be of interest...
Step 1... ...start with the best possible scan of the faded print... Step 2... process the resulting scan file to restore best possible (preference) gray tone contrasts, details, eliminating noise, specks, dust, etc... ...then Extract its Luminance channel and Convert it to 24 or 48 bit color... Step 3... Open the Color Curves transform with the resulting Step 2 image version as the Input... ...using the the upper OPT-ions, Load the *.cc file whose text is shown below... ...the SplitTone curves will tend to show slight bluish tints below a 50% Luminance transitioning to slight reddish tints above a 50% Luminance... Copy the following text [PWP7 *.cc file format] to a plain text editor (Notepad), then 'Save as' <name>.cc in a favored folder location:
ColorCurves 1.0
colorspace 2
component 0
npts1 5
style1 spline
histexpand1 0
point1 0 0 0
point1 1 77 69
point1 2 153 158
point1 3 204 209
point1 4 255 255
npts2 5
style2 spline
histexpand2 0
point2 0 0 0
point2 1 77 77
point2 2 153 153
point2 3 204 204
point2 4 255 255
npts3 5
style3 spline
histexpand3 0
point3 0 0 0
point3 1 77 80
point3 2 153 153
point3 3 204 204
point3 4 255 255
end
#Manual ColorCurves RGB channel coordinates [horizontal-vertical]:
#R channel in %: 0-0 30-27 60-62 80-82 100-100
#G channel in %: 0-0 30-30 60-60 80-80 100-100
#B channel in %: 0-0 30-32 60-60 80-80 100-100
enjoy...
...den...
Step 1... ...start with the best possible scan of the faded print... Step 2... process the resulting scan file to restore best possible (preference) gray tone contrasts, details, eliminating noise, specks, dust, etc... ...then Extract its Luminance channel and Convert it to 24 or 48 bit color... Step 3... Open the Color Curves transform with the resulting Step 2 image version as the Input... ...using the the upper OPT-ions, Load the *.cc file whose text is shown below... ...the SplitTone curves will tend to show slight bluish tints below a 50% Luminance transitioning to slight reddish tints above a 50% Luminance... Copy the following text [PWP7 *.cc file format] to a plain text editor (Notepad), then 'Save as' <name>.cc in a favored folder location:
ColorCurves 1.0
colorspace 2
component 0
npts1 5
style1 spline
histexpand1 0
point1 0 0 0
point1 1 77 69
point1 2 153 158
point1 3 204 209
point1 4 255 255
npts2 5
style2 spline
histexpand2 0
point2 0 0 0
point2 1 77 77
point2 2 153 153
point2 3 204 204
point2 4 255 255
npts3 5
style3 spline
histexpand3 0
point3 0 0 0
point3 1 77 80
point3 2 153 153
point3 3 204 204
point3 4 255 255
end
#Manual ColorCurves RGB channel coordinates [horizontal-vertical]:
#R channel in %: 0-0 30-27 60-62 80-82 100-100
#G channel in %: 0-0 30-30 60-60 80-80 100-100
#B channel in %: 0-0 30-32 60-60 80-80 100-100
enjoy...
...den...