JPEG Viewer : Help : Tutorial : Part 2 - Adjust Image Color
Brightness / Contrast
[Edit] -> [Adjust] -> [Brightness / Contrast]
Select RGB channel
All or part of channels can be edited
Adjust Brightness
Darker or brighter the image
Adjust Contrast
Increase or decrease the contrast
Adjust Level
The reference value for contrast
Color Balance
[Edit] -> [Adjust] -> [Color Balance]
Adjust RGB channel offset
Increase R the image become red
Decrease R the image become cyan
Increase G the image become green
Decrease G the image become magenta
Increase B the image become blue
Decrease B the image become yellow
CMYK
[Edit] -> [Adjust] -> [CMYK]
Adjust CMYK color amount
C adjust the amount of cyan
M adjust the amount of magenta
Y adjust the amount of yellow
Increase K the image become darker
Decrease K the image become brighter
Hue / Saturation / Lightness
Swap color
[Edit] -> [Adjust] -> [Hue / Saturation / Lightness]
Adjust hue
Adjust the angle offset of hue
Adjust saturation
Adjust the saturation offset
Adjust lightness
Adjust the lightness offset
Colorize Image
[Edit] -> [Adjust] -> [Hue / Saturation / Lightness]
Enable colorize
Set hue
Set the angle of hue
Adjust saturation
Adjust the saturation amount
Adjust lightness
Adjust the lightness
0
30
60
90
120
150
180
210
240
270
300
330
Level
[Edit] -> [Adjust] -> [Level]
Select curve mode
Line, Polynomial
Add/Remove control points
3 - 16 points
Adjust control point position
Input/Ouput
Saturation
[Edit] -> [Adjust] -> [Saturation]
Select color space
BT601, BT709, JPEG, HSL
Adjust saturation
Increase or decrease saturation