Image data compressing apparatus
AssigneeFuji Photo Film Co., Ltd.
InventorKenji Funamoto
Life of this patent
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Abstract
When an nth frame of encoded data is stored in a compressed-data storage area that stores 15 frames of encoded data, a target amount of code of the nth frame is decided so as to become a value that is the result of dividing the residual capacity of an area remaining in the compressed-data storage area by the number of remaining images to be stored in this remaining area. This makes it possible to prevent the target amount of code from becoming very large or very small. Even if there is a change in a photographic scene, therefore, a drastic change in image quality from frame to frame can be prevented.
Claims4
An image data compressing apparatus comprising:
- an encoded data device for generating encoding data by subjecting image data representing one frame of an image to calculation of orthogonal transform coefficients, quantization of the orthogonal transform coefficients and encoding of the quantized orthogonal transform coefficients;
- a storage controller for storing the encoded data generated by said encoded data device in a storage area having a capacity for storing a plurality of frames of encoded data;
- and
- an encoding controller for controlling said encoded data device in such a manner that encoded data that will be generated will become an amount of data obtained by averaging residual storage capacity of a remaining area of the storage area using a number of frames of images represented by encoded data to be stored in said remaining area.
Dependencies are inferred from the claim text.