object contrast

object contrast

[′äb·jekt ′kän‚trast]
(optics)
The ratio of the difference between the brightness of an object and of the background to the brightness of the background in an image or reproduction.
References in periodicals archive ?
ODM also determines the contrast of the object against the sky background, presenting this as the "Log Object Contrast," or LOC.
NEW - Auto Shading - Similar to Ambient Occlusion, creates realistic shading based on lines and object contrast within each layer creating stylistic 3D effects
The ratio of image contrast to object contrast at various angular scales is called the telescope's modulation transfer function, as explained in this department by William Zmek (S&T: July 1993, page 91, and September 1993, page 83).
The HP PhotoSmart C20 digital camera was recognized internationally by German Foto & PC Magazine as the "Test Winner" for its resolution, object contrast and picture contrast.
Evaluating a telescope's contrast performance is just a matter of plotting the ratio of image contrast to object contrast for details in a whole range of angular sizes.
Ensuring an object contrasts well with its background will guarantee it has visual impact.