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Showing papers on "Standard test image published in 1976"


Patent
25 Nov 1976
TL;DR: In this article, the test image of the wheel axle is projected over a mirror on an image plane near the projector, and a characteristic for the angular position of wheel axle quantity is obtained from the deviatio of the projected test image from a mark on the image plane.
Abstract: The test image of the axle is projected over a mirror on an image plane near the projector The mirror (16) is mounted on the vehicle (10) body and/or frame and aligned w r t specified points of the body and/or frame Projectors (21, 24) are mounted on the tested axle, and the test image is projected by a mirror (17-22) to an image plate A characteristic for the angular position of the wheel axle quantity is obtained from the deviatio of the projected test image from a mark on the image plane This method is simple enough to be carried out by newcomers to the business

1 citations


Proceedings ArticleDOI
23 Dec 1976
TL;DR: In order to improve the final CT image, various picture processing routines may be used, which include pre- and post-reconstruction smoothing, edge enhancement and image subtraction.
Abstract: Little technical information has been made available on CT image format or viewers. For large matrix displays (320 x 320 or 512 x 512), a high quality TV monitor with a bandwidth of 10 MHz or greater is required. If only a single field of a two to one positive interlaced TV monitor is displayed, an 875 line rate TV would be required in order to display the entire matrix. For image recording, a transparency system such as a multi-format unit or a 105 mm roll film camera will generally provide the best results. Finally, in order to improve the final CT image, various picture processing routines may be used. These include pre- and post-reconstruction smoothing, edge enhancement and image subtraction.© (1976) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

1 citations


Journal ArticleDOI
TL;DR: Comparison of the computer pictorial printouts using aerial positive transparencies as input images clearly shows that edges with inhibition are more pronounced than those without inhibition.
Abstract: The phenomenon of human eye inhibition is modeled in a solid-state sensor array system for the purpose of image edge enhancement. Three inhibition algorithms are simulated on a computer and evaluated using a uniform cross pattern as a test image. The algorithm giving the most enhancement is used in an on-line sensor array-minicomputer system. Comparison of the computer pictorial printouts using aerial positive transparencies as input images clearly shows that edges with inhibition are more pronounced than those without inhibition. Also more topographic features are recognizable in the outputs with inhibition.