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Proceedings ArticleDOI

Compression Of Stereo Images And The Evaluation Of Its Effects On 3-D Perception

30 Jan 1990-Vol. 1153, pp 522-530
TL;DR: The proposed approach to stereo image coding takes advantage of the singleness of vision property of the human visual system and shows that a stereo image pair, in which one of the images is low-pass filtered and subsampled, is perceived as a sharp 3-D image.
Abstract: The proposed approach to stereo image coding takes advantage of the singleness of vision property of the human visual system. Experiments show that a stereo image pair, in which one of the images is low-pass filtered and subsampled, is perceived as a sharp 3-D image. The depth information is perceived due to the stereopsis effect, and the sharpness is maintained due to the details in the non-filtered image. A methodology for the evaluation of the compression effects on the 3-D perception of stereo images is presented. It is based on measurements of response-time and accuracy of human subjects performing simple 3-D perception tasks.
Citations
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Dissertation
01 Jan 1997
TL;DR: A new algorithm, multiple viewpoint rendering (MVR), is described which produces an equivalent set of images one to two orders of magnitude faster than previous approaches by considering the image set as a single spatio-perspective volume.
Abstract: This thesis describes a computer graphics method for efficiently rendering images of static geometric scene databases from multiple viewpoints. Three-dimensional displays such as parallax panogramagrams, lenticular panoramagrams, and holographic stereograms require samples of image data captured from a large number of regularly spaced camera images in order to produce a three-dimensional image. Computer graphics algorithms that render these images sequentially are inefficient because they do not take advantage of the perspective coherence of the scene. A new algorithm, multiple viewpoint rendering (MVR), is described which produces an equivalent set of images one to two orders of magnitude faster than previous approaches by considering the image set as a single spatio-perspective volume. MVR uses a computer graphics camera geometry based on a common model of parallax-based three-dimensional displays. MVR can be implemented using variations of traditional computer graphics algorithms and accelerated using standard computer graphics hardware systems. Details of the algorithm design and implementation are given, including geometric transformation, shading, texture mapping and reflection mapping. Performance of a hardware-based prototype implementation and comparison of MVR-rendered and conventionally rendered images are included. Applications of MVR to holographic video and other display systems, to three-dimensional image compression, and to other camera geometries are also given. (Copies available exclusively from MIT Libraries, Rm. 14-0551, Cambridge, MA 02139-4307. Ph. 617-253-5668; Fax 617-253-1690).

28 citations


Cites background from "Compression Of Stereo Images And Th..."

  • ...Dinstein, Kim, Tselgov, and Henik blurred and compressed one or both stereo images in a pair and evaluated performance of a depth-dependent task [21]....

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Proceedings ArticleDOI
17 Apr 1995
TL;DR: In this article, a disparity-based segmentation approach is proposed to achieve an efficient partition of the image into regions of more or less fixed disparity, in order to minimize the edge artifacts after disparity compensation.
Abstract: Stereoscopic image sequence transmission over existing monocular digital transmission channels, without seriously affecting the quality of one of the image streams, requires a very low bit-rate coding of the additional stream. Fixed block-size based disparity estimation schemes cannot achieve such low bit-rates without causing severe edge artifacts. Also, textureless regions lead to spurious matches which hampers the efficient coding of block disparities. In this paper, we propose a novel disparitybased segmentation approach, to achieve an efficient partition of the image into regions of more or less fixed disparity. The partitions are edge based, in order to minimize the edge artifacts after disparity compensation. The scheme leads to disparity discontinuity preserving, yet smoother and more accurate disparity fields than fixed block-size based schemes. The smoothness and the reduced number of block disparities lead to efficient coding of one image of a stereo pair given the other. The segmentation is achieved by performing a quadtree decomposition, with the disparity compensated error as the splitting criterion. The multiresolutional recursive decomposition offers a computationally efficient and non-iterative means of improving the disparity estimates while preserving the disparity discontinuities. The segmented regions can be tracked temporally to achieve very high compression ratios on a stereoscopic image stream.

23 citations

Book ChapterDOI
01 Jan 1994
TL;DR: New still and motion stereo compression schemes that are far efficient than monocular compression schemes in compressing stereo image streams are introduced.
Abstract: Direct application of monocular compression schemes to stereo video streams is suboptimal. This is because these techniques do not take advantage of the high correlation between the left and right stereo image pairs. This paper introduces new still and motion stereo compression schemes that are far efficient than monocular compression schemes in compressing stereo image streams. 1. “worldline” borrowed from the field of special relativity, means the path of an object in 4-dimensional space - time. 2. Includes zero time offset 3. Matching for a block of pixels of the right image achieved similarly with appropriate changes. 4. Redundancy defined according to some similarity criterion. 5. Zero offset included.

22 citations


Cites background from "Compression Of Stereo Images And Th..."

  • ...Research in stereoscopic vision in the human visual system has indicated that a stereo pair containing high and low resolution images has effectively no loss of image quality or depth perception[5,6]....

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  • ...Several authors have proposed stereo image compression schemes that take advantage of psychophysical aspects of the human vision system[5,6]....

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Proceedings ArticleDOI
16 Sep 1996
TL;DR: A frequency domain approach based on the suppression theory of binocular vision is proposed for compression of stereo images by using the information in the frequency domain, so complex disparity estimation techniques can be avoided.
Abstract: In this paper we present a method for compression of stereo images. The proposed scheme is a frequency domain approach based on the suppression theory of binocular vision. By using the information in the frequency domain, complex disparity estimation techniques can be avoided. The wavelet transform is used to obtain a multiresolution analysis of the stereo pair by which the subbands convey the necessary frequency domain information.

21 citations

Journal ArticleDOI
TL;DR: A systematic procedure is presented here for specifying the relative positions of spatial samples in successive pyramid levels-a complication that arises when generalizing from integer reduction factors to rational factors.
Abstract: This paper presents a technique for image pyramid generation, in which the reduction (expansion) factor between layers is any rational number M/L. The image pyramid generation is modeled as an interpolation and filtering followed by a decimation. The model enables frequency domain analysis of the image pyramid, as well as convenient design of the generating kernels. L(M) generating kernels are necessary to produce an image pyramid with reduction (expansion) factor M/L(L/M). A polyphase filter network scheme is used where the L(M) generating kernels can be produced by sampling one prototype low-pass filter with cutoff frequency at omega = pi /max(M,L). Using these polyphase filters, the frequency content of pyramid image decompositions can be adjusted with great flexibility. A systematic procedure is presented here for specifying the relative positions of spatial samples in successive pyramid levels-a complication that arises when generalizing from integer reduction factors to rational factors. Two types of low-pass filters are employed in this work for the prototype filter design: a binomial filter and an FIR linear phase filter. Illustrative examples are presented. >

16 citations

References
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Book
01 Jan 1978
TL;DR: In this paper, a unified experimental approach to the study of the mind based on experiments concerning the time course of human information processing is described, drawing systematically on studies of performance, subjective experience, and brain processes.
Abstract: In this widely cited volume, Professor Posner describes a unified experimental approach to the study of the mind based on experiments concerning the time course of human information processing. Drawing systematically on studies of performance, subjective experience, and brain processes, he develops relationships between cognitive psychology and neuroscience. Professor Posner has written a new preface for the paperback edition.

69 citations