Image processing apparatus and method

摘要

An image processing apparatus generates an image appended with additional effective pixels by executing appending processing for appending additional effective pixels by extending input image data in a scanning direction using pixels at terminal ends of the input image data in the scanning direction. The image processing apparatus generates image data of a second hierarchy obtained by reducing the input image data by applying filtering to the generated image appended with the additional effective pixels, and generates image data of a third hierarchy by applying filtering to the image data of the second hierarchy.

主权项

1. An image processing apparatus comprising:
a CPU configured to carry out functions of a pixel appending unit, a first generating unit, and a second generating unit:
said pixel appending unit configured to generate first image data by executing appending processing for appending pixels required to extend effective image data, which is outputted from effective pixels included in an image sensor, in a scanning direction using pixels at an end portion of the effective image data in the scanning direction;said first generating unit configured to generate second image data obtained by reducing the first image data by applying filtering to the first image data; andsaid second generating unit configured to generate third image data obtained by reducing the second image data by applying filtering to the second image data, wherein the second image data includes a second effective pixel whose centroid matches that of a first effective pixel at a terminal end of the effective image data in the scanning direction, and the third image data includes a third effective pixel whose centroid matches that of the second effective pixel.