Showing papers on "Motion blur published in 1988"
Book•
01 Dec 1988
TL;DR: In this paper, the directions of the rays are distributed according to the analytic function they sample, which can incorporate fuzzy phenomena, such as penumbras, translucency, and fuzzy reflections.
Abstract: Ray tracing is one of the most elegant techniques in computer graphics. Many phenomena that are difficult or impossible with other techniques are simple with ray tracing, including shadows, reflections, and refracted light. Ray directions, however, have been determined precisely, and this has limited the capabilities of ray tracing. By distributing the directions of the rays according to the analytic function they sample, ray tracing can incorporate fuzzy phenomena. This provides correct and easy solutions to some previously unsolved or partially solved problems, including motion blur, depth of field, penumbras, translucency, and fuzzy reflections. Motion blur and depth of field calculations can be integrated with the visible surface calculations, avoiding the problems found in previous methods.
769 citations
05 Jun 1988
TL;DR: It is demonstrated that a straightforward deconvolution process yields range when the scene is isoplanatics or can be approximated by a set of isoplanatic patches and it is shown that a blur-acute pair contains more information than a stereo pair, permitting solutions in situations that are ambiguous for binocular stereo.
Abstract: Lateral camera motion produces image blur inversely proportional to object range. Such an image, coupled with an unblurred image of the same scene (designated a blur-acute pair), has been studied to determine its usefulness for object ranging. It is demonstrated that a straightforward deconvolution process yields range when the scene is isoplanatic or can be approximated by a set of isoplanatic patches. It is also shown that a blur-acute pair contains more information than a stereo pair, permitting solutions in situations that are ambiguous for binocular stereo. A rotating mirror scheme is discussed which is capable of producing controlled lateral motion blur without the need for motion of the camera itself. >
22 citations
Patent•
12 Jul 1988
TL;DR: In this paper, an operation apparatus for an inverse filter is connected to a memory apparatus and applies the imaging position of a plurality images and the distance from a set cut surface to said images read from the memory apparatus to remove the motion blur of the tomographic image.
Abstract: PURPOSE:To prevent the deterioration of spatial resolving power accompanying by the reconstitution of a tomographic image, by applying filter processing corresponding to an imaging position and the distance from a set cut surface to a plurality of images read from a memory apparatus by an operation apparatus for an inverse filter connected to said memory apparatus to remove the motion blur of the tomographic image. CONSTITUTION:An operation apparatus 21 for an inverse filter is connected to a memory apparatus 14 and applies the imaging position of a plurality images and the distance from a set cut surface to said images read from the memory apparatus 14. The image measured by the relative movement of a radiation source 2 and a radiation detector 3 is read from the memory apparatus 14 to be set to the original image which is, in turn, subjected to Fourier transform. Next, the original image subjected to Fourier transform is multiplied by an inverse filter function H' (omegax) for example in a frequency space by the operation apparatus 21 for the inverse filter. By this method, an actual space is restored and an image free from blur is obtained.
6 citations