Image data processing apparatus that automatically sets a data compression rate
First Claim
1. An image data processing apparatus for converting a taken optical image into digital image data, compressing the digital image data, and recording in a memory, said apparatus comprising:
- first means for dividing a screen into a plurality of blocks, calculating an activity by digitizing the complexity of an image data of each block and an activity of the entire screen of the image data, determining a code amount of the entire screen by setting data compression rate based on the activity the entire screen, and determining code amount allotted to each block in proportion to the activity calculated for each block, thereby controlling code amount of each block.
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Abstract
The invention is based on an electronic still camera for converting a taken optical image of the subject into digital image data, and recording into a memory card incorporating semiconductor memories, in which the digital image data obtained from this electronic still camera is stored in a large-capacity recording medium through an exclusive recording device, or displayed in plural monitors, or stored in a disk or magnetic tape by existing recording devices or even compressed, expanded, edited or processed, so that it may satisfy versatile requests of users sufficiently.
130 Citations
4 Claims
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1. An image data processing apparatus for converting a taken optical image into digital image data, compressing the digital image data, and recording in a memory, said apparatus comprising:
first means for dividing a screen into a plurality of blocks, calculating an activity by digitizing the complexity of an image data of each block and an activity of the entire screen of the image data, determining a code amount of the entire screen by setting data compression rate based on the activity the entire screen, and determining code amount allotted to each block in proportion to the activity calculated for each block, thereby controlling code amount of each block. - View Dependent Claims (2, 3, 4)
Specification