Change Brightness of Picture
change brightness of picture
picture to change brightness
picture brightness
(1 = usual)
dithering (photograph)
The change brightness of picture function enables to change the picture brightness continuously. By the first parameter, the picture to change brightness , the picture to be converted is presented to the function. The second parameter, the picture brightness , is a numeric parameter determining the relative change of the picture brightness. The value of 1 leaves the picture without any change. By increasing the number above the value of 1 the picture will get brighter, by diminishing it to a value ranging between 0 and 1 it will get darker.
The last parameter, the dithering will provide for a proper semi-shades reproduction by means of the dithering . The dithering operation is time consuming, therefore the default setting of this parameter is "off". It is suitable to switch it on only when a high quality picture conversion is required.