Image superimposing system

Details Image superimposing system Image superimposing system

1984-08-21

1987-06-23

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, 358 78, 358182, 358183, H04N 976, H04N 146

Patent

active

046757252

ABSTRACT:
This relates to the modification of the whole, or a substantial part, of an image, for example to the merging of two images or to applying a tint to an image. To achieve this, using only the normal data processing capability provided for handling a single image, two images (I.sub.1, I.sub.2) are stored in first and second portions of a normal image store; for example, if the normal image store has a capacity of 1024.sup.2 pixels, each image may be stored at a resolution of 512.sup.2 pixels. In a further 1-bit store there is stored a mask consisting of alternate 1's and 0's and the mask output is used to select pixels from the two portions of the image store alternately. The mask output also selects multiplying factors A and (1-A) alternately. Then each pixel from the first image, after multiplication by A, is added to an immediately succeeding pixel from the second image after its multiplication by (1-A). The resulting sum signals are used to control an image display (34). This achieves merging of two images within the normal data processing capability provided for one image. When a tint is to be applied to the first image, the same value is used for each pixel of the second "image".

REFERENCES:
patent: 3764732 (1973-10-01), Macheboeuf
patent: 4334245 (1982-06-01), Michael

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