Book ChapterDOI
A simple method for color quantization: octree quantization
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A new method for filling a color table is presented that produces pictures of similar quality as existing methods, but requires less memory and execution time.Abstract:
A new method for filling a color table is presented that produces pictures of similar quality as existing methods, but requires less memory and execution time. All colors of an image are inserted in an octree, and this octree is reduced from the leaves to the root in such a way that every pixel has a well defined maximum error. The algorithm is described in PASCAL notation.read more
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Book
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References
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Journal ArticleDOI
Geometric modeling using octree encoding
TL;DR: Efficient (linear time) algorithms have been developed for the Boolean operations, geometric operations,translation, scaling and rotation, N-dimensional interference detection, and display from any point in space with hidden surfaces removed.
Proceedings ArticleDOI
Color image quantization for frame buffer display
TL;DR: It is demonstrated that many color images which would normally require a frame buffer having 15 bits per pixel can be quantized to 8 or fewerbits per pixel with little subjective degradation.
Journal ArticleDOI
A survey of techniques for the display of continuous tone pictures on bilevel displays
TL;DR: This work presents a survey of processing techniques for presenting continuous tone still images on such displays by dividing an image into picture elements and comparing the intensity of each element with a threshold value.
Journal ArticleDOI
Oct-trees and their use in representing three-dimensional objects
TL;DR: Oct-Trees are developed as a three-dimensional analog of quad-trees to be used in geometric modeling and space planning and a fast algorithm is given for 90° rotation of oct-tree representations of objects.
Journal ArticleDOI
Color image quantization for frame buffer display
TL;DR: Algorithms for adaptive, tapered quantization of color images are described and the research is motivated by the desire to display high-quality reproductions ofcolor images with small frame buffers.