Patent ID: 7260268

Claim:
An image signal processing apparatus for separating and extracting an edge component and a non-edge component of an input image signal, the apparatus comprising: a first edge component extracting means for extracting a first edge component from the input image signal in a first frequency band; a second edge component extracting means for extracting a second edge component from the input image signal in a second frequency band wider than the first frequency band; a detection means for detecting an edge of the first edge component extracted through the first edge component extracting means; a selection means for selecting from one of the first edge component extracted through the first edge component extracting means and the second edge component extracted through the second edge component extracting means as the edge component of the input image signal, based on the edge of the first edge component detected by the detection means; and a non-edge component extracting means for extracting the non-edge component of the input image signal.