In a method for amplifying a colour signal (202, 204, 218) of an image pickup apparatus, a gain factor (212) for amplifying the colour signal depends on a luminance level of the colour signal.
A color capture device transmits a source color signal designating the selected color.
In the case of a colored condition, namely, when the color signal includes color information, a pulse signal generating part (4) generates, for example, a high level pulse signal.
A color contrast can be improved while a deterioration of an image signal including a negative color signal is suppressed.
The image processing apparatus (1) is adapted to transform the color input signal (3) into a modified color signal (9) for display on a color display (11).
The lightness signal L* and chromaticity signal (a*, b*) are converted into a color signal of the image output apparatus.
The aim is to simplify this harmonization of the transit times of luminance signal and chrominance signal.
This color-signal-processing circuit (20) comprises a correction-signal-generating unit (21) and a correcting unit (22).
An image signal inputted from an image signal input unit (12) is introduced to LPF (14, 16) having different frequency response characteristics so as to remove a color signal component.
Quadrature demodulation (30, 32) of the color subcarrier produces color signal digital words I and Q which are each sampled and latched (36, 42) during the color subcarrier burst.
This invention discloses a security paper which indicates exposure to a solvent by a solvent resistant color signal.
A separate color signal indicates the color of each pixel as the electron beam moves across the display.]
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