| 摘要 |
An image processing apparatus and method are provided to perform additional image signal processes such as filtering and edge detection using discrete cosine transform. An image processing apparatus includes a discrete cosine transformer(201), a data controller(260), and an inverse discrete cosine transformer(254). The discrete cosine transformer discrete-cosine-transforms an input image to generate a plurality of discrete cosine transform coefficients. The data controller substitutes parts of the discrete cosine transform coefficients by zero to generate pre-processed data according to filter condition selection. The inverse discrete cosine transformer inverse-discrete-cosine-transforms the pre-processed data to generate a signal-processed image. |
