| 摘要 |
<p>An image signal processing device (1) comprises a coding unit (10), a delay unit (20), a difference operation unit (30), a decoding unit (40), a quantization error determination unit (50), and a corrected image data output unit (60). When a difference (D) outputted form the difference operation unit (30) is a predetermined value (D) or less, the corrected image data output unit (60) outputs, as corrected image data (G'), image data (G) inputted to the coding unit (10), and when the difference (D) is more than the predetermined value (D), determines a basic correction value from the image data (G) inputted to the coding unit (10) and decoded image data (G) outputted from the decoding unit (40), decreases the basic correction value according to the magnitude of a quantization error (E) determined by the quantization error determination unit (50) to obtain an amended correction value, and outputs the corrected image data (G') obtained by adding the amended correction value to the image data (G) inputted to the coding unit (10).</p> |
