luminance channel

[′lü·mə·nəns ‚chan·əl]

(communications)

A path intended primarily for the luminance signal in a color television system.

References in periodicals archive ?

Rather, I synthesize a luminance channel by combining all my other filtered shots into a monochrome result that can be used as a luminance image.

Briqht-Sky imaging: there are plenty of things to shoot under moonlit and urban skies

In order to model the slow-smoke color, luminance channel is subtracted from chrominance channel and linear interpolation is performed to fit the range of values to [0,255].

Fast video fire detection using luminous smoke and textured flame features

The method keeps the image chromatic contrast, which could be lost in case of a simple luminance channel extraction.

Detecting a pattern in a video stream after denoising and color fading preprocessing

Gain Channel--serves as the setting of the luminance channel

Universal serial bus pulse width modulation interface

We suggest this is an unintentional error as the opponent color model is usually considered to comprise a luminance channel and two chromatic channels, brightness having contributions from all three channels.

The authors' reply

With my color data assembled, it's time to address the luminance channel.

Processing with PixInsight: follow this workflow to get more out of your deep-sky astrophotos

The luminance channel of HDR image contains information about dynamic range.

A tone mapping algorithm based on multi-scale decomposition

Once I am happy, I then integrate the Luminance channel with the RGB data using the LRGB Combination tool (Process / Color Spaces / LRGB Combination).

Building mosaics in pixInsights: stitching together seamless mosaics is easy with this multi-platform software

All the parameters of the encoded video signal, such as the black level, blanking level and super-white pulse levels in the luminance channel, and the differential gain and color burst amplitude of the chrominance channel, are programmable via the encoder's high speed I2C-bus interface.

Philips introduces a unique one-chip video and text encoder for digital video systems

When merged with the original H[alpha] image, this new RGB channel is now a better match for the high-contrast H[alpha] luminance channel (set at full opacity).

CCD Imaging with Hydrogen-Alpha Filters

Features of the luminance channel processing include peaking filters to improve image sharpness and picture quality.

Digital multi-standard video signal decoder features CCIR-601 compatibility

If we convert a color exposure to Lab mode and then replace the L channel with a Tech Pan exposure, we should end up with exactly the same color information, but the new, finely detailed luminance channel will result in a superior image.