Search results
Results From The WOW.Com Content Network
The maximum contrast of an image is termed the contrast ratio or dynamic range. In images where the contrast ratio approaches the maximum possible for the medium, there is a conservation of contrast. In such cases, increasing contrast in certain parts of the image will necessarily result in a decrease in contrast elsewhere.
Lighting ratio in photography refers to the comparison of key light (the main source of light from which shadows fall) to the total fill light (the light that fills in the shadow areas). [1] The higher the lighting ratio, the higher the contrast of the image; the lower the ratio, the lower the contrast.
For example, in Metropolis, chiaroscuro lighting creates contrast between light and dark mise-en-scene and figures. The effect highlights the differences between the capitalist elite and the workers. In photography, chiaroscuro can be achieved by using "Rembrandt lighting". In more highly developed photographic processes, the technique may be ...
Examples of such tone mapping methods include: gradient domain high dynamic range compression and A Perceptual Framework for Contrast Processing of High Dynamic Range Images (a tone mapping is one of the applications of this framework). Another approach to tone mapping of HDR images is inspired by the anchoring theory of lightness perception.
Contrast sensitivity is the reciprocal of the smallest contrast for which a person can see a sine-wave grating. A person's contrast sensitivity function is contrast sensitivity as a function of spatial frequency. Normally, peak contrast sensitivity is at about four cycles per degree of visual angle. At higher spatial frequencies, comprising ...
Film negatives usually have less contrast, but a wider dynamic range, than the final printed positive images. The contrast typically increases when they are printed onto photographic paper. When negative film images are brought into the digital realm, their contrast may be adjusted at the time of scanning or, more usually, during subsequent ...
Photo interpretation at the U.S. National Photographic Interpretation Center during the Cuban Missile Crisis.. Aerial photographic and satellite image interpretation, or just image interpretation when in context, is the act of examining photographic images, particularly airborne and spaceborne, to identify objects and judging their significance. [1]
Raise fill power until detail is seen in the black clothing. The nose on front of the face will be observed to be lighter than the ears due to the inverse-square fall off of the fill source and it will create a light-to-dark gradient. The contrast of the gradient can be altered by changing the distance of the fill light from the subject.