| 摘要 |
<p>An image pickup apparatus and method capable of reducing the image recording time and reducing the memory capacity required for compression processing. A byte counter (302) calculates the number of bytes after compression according to the integration value of the high frequency integration data supplied from a high frequency integration processor. A Q scale calculator (303) calculates a Q scale capable of compressing the image data to a predetermined data size by one operation according to the number of bytes calculated. A Q table creator (304) creates a Q table according to the Q scale. A DCT unit (321) performs discrete cosine transform to the input image data. A quantization processor (322) adjusts the compression ratio of the image data according to the latest Q table supplied from the Q table creator (304). A variable length coding processor (323) encodes the image data by the variable length code such as Huffman code and outputs the data as compression image data. The present invention can be applied to a digital camera.</p> |
