IMAGE PROCESSING DEVICE AND METHOD

摘要

The present invention relates to image processing device and method which can suppress block noise. A filter strength determination unit determines the filter strength for every four lines under the control of a control unit. In other words, if a block boundary determination unit has determined to perform filtering, the filter strength determination unit determines at which strength of the strong filter or the weak filter the filtering process is performed, and outputs the determination result to a filter calculation unit. On this occasion, the filter strength determination unit uses the Bs value in the determination formula of the strong filter. For example, in the case of using the Bs value, the threshold of the determination is set in accordance with a linear function of the Bs value from the control unit. The present disclosure can be applied to, for example, an image processing device.

主权项

1. An image processing device comprising:
a filter determination unit that determines whether to apply a strong filter by using a strength parameter representing strength of a deblocking filter for a block boundary, which is a boundary between a block of an image locally decoded when an image is encoded, and an adjacent block adjacent to the block; a filter unit that applies the strong filter for the block boundary if the filter determination unit has determined to apply the strong filter; and an encoding unit that encodes the image in units having a layer structure by using the image to which the strong filter has been applied by the filter unit.