IMAGE PROCESSOR

摘要

An image processor includes an LSRAM accessible with a higher speed than a frame memory and configured to hold a second image in a predetermined range of a first image, an image production unit configured to read an image in a predetermined range of the second image and produce a third image for rough search based on the read image, an MSRAM accessible with a higher speed than the frame memory and configured to hold the third image, a first search unit configured to read the third image and perform first motion search based on the third image, and a second search unit configured to read a fourth image in a predetermined range of the second image based on a search result by the first search unit and perform second motion search that is more detailed than the first motion search based on the fourth image.

主权项

1. An image processor that performs motion search by referring to a first image stored in an external memory, the image processor including:
a first internal memory accessible with a higher speed than the external memory and configured to hold a second image in a predetermined range of the first image; an image production unit configured to read an image in a predetermined range of the second image from the first internal memory and produce a third image for rough search based on the read image; a second internal memory accessible with a higher speed than the external memory and configured to hold the third image produced by the image production unit; a first search unit configured to read the third image from the second internal memory and perform first motion search based on the third image; and a second search unit configured to read a fourth image in a predetermined range of the second image from the first internal memory based on a search result by the first search unit and perform second motion search that is more detailed than the first motion search based on the fourth image.