专利汇可以提供Method and apparatus for compressing radiant专利检索,专利查询,专利分析的服务。并且PURPOSE: To compress simply an optimum data in a short time by classifying a table used for an entropy coding in advance and selecting and using it depending on the combination of the position of a radiant rays picture image and the image pickup condition.
CONSTITUTION: A reading means 3 scanning and reading photoelectrically its visual image is provided at the back of a picture image recording medium 2 attaining the photoelectric reading of an X-ray transmission picture of an object 1 as the visual image. The output of the reading means 3 is inputted to a signal processing means including a data compressing circuit provided with a table 4A of codes for entropy coding. Lots of tables 4A are prepared while being classified corresponding to the combination of the position of the radiant rays picture and the image pickup condition and they are selected and used by an input means 5 for the position and the image pickup condition. A digital signal processing circuit using such as the table for converting into the Haffmann code to compress a digital signal is used as the signal processing means 4.
COPYRIGHT: (C)1984,JPO&Japio,下面是Method and apparatus for compressing radiant专利的具体信息内容。
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