Image analysis – Histogram processing – For setting a threshold
Patent
1988-10-24
1992-03-10
Razavi, Michael
Image analysis
Histogram processing
For setting a threshold
382 49, 3582611, 3582613, 340747, G06K 936
Patent
active
050955128
ABSTRACT:
Bit-mapped and compressed image data are converted one another through an intermediate image data or code form wherein each image is represented by a list of sublists, each sublist being itself a list of numerical values representing run lengths transistions from one type of picture element (pel) to a second and opposite type of picture element (pel) (e.g., a black pel and a white pel). Hence the intermediate code data structure according to the invention is termed a transition list or TL code or data structure. The data structure and coding rules are defined by rules relating to code type, code word length and code word interdependence. A specific conversion process specifies that the transition list be composed of sublists wherein each represents a scan line. The preferred form of intermediate code is a fixed word-length transition list, that is, a serial list of values representing run lengths of either "black" picture elements or "white" picture elements stored serially in digital data format having a fixed word length.
REFERENCES:
patent: 4602383 (1986-07-01), Ogawa et al.
patent: 4610027 (1986-09-01), Anderson et al.
patent: 4646356 (1987-02-01), Anderson et al.
patent: 4783834 (1988-10-01), Anderson et al.
patent: 4858017 (1989-08-01), Torbey
patent: 4876607 (1989-10-01), Tseng
Roy Hunter et al., International Digital Facsimile Coding Standards, 7-1980, 854-867.
CCITT Recommedation T.4, "Standardization of Group 3 Facsimile Apparatus for Document Transmission", Fascicle VII.3, Geneva, 1980, amended at Malaga-Torremolinos, 1984.
CCITT Recommendation T.6, "Facsimile Coding Schemes and Coding Control Functions for Group 4 Facsimile Apparatus", Fascicle VII.3, Rec. T.6, (Malaga-Torremolinos, 1984).
Hunt Dennis L.
Roberts Lawrence G.
NetExpress Systems, Inc.
Razavi Michael
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