Image processing apparatus, image processing method, and computer program

摘要

A general moving image includes a plurality of objects in a frame image. At the time of playback, the temporal visual characteristic is taken into consideration uniformly in the overall frame image. It is therefore impossible to perform playback while particularly considering an object of interest. In this invention, when playing back a moving image including a plurality of time-divided frame images, the object adaptation time of each object image is acquired first in the frame image of interest of the plurality of frame images. An adaptation weight is calculated based on the acquired object adaptation time, and a low-pass image reflecting the adaptation weight is generated for each object image. Color adaptation conversion using the low-pass image makes it possible to perform, for the frame image of interest, color conversion based on the adaptation time of each object image and perform color conversion particularly considering an object of interest.

主权项

1. An image processing apparatus for playing back a moving image including a plurality of time-divided frame images so as to reflect a human spatial visual characteristic and temporal visual characteristic, the apparatus comprising:
an object extraction unit configured to extract object images from a frame image of interest in the plurality of frame images and to store a flag representing whether or not an operator is paying attention to the extracted object image, wherein the flag corresponds to the extracted object image and is based on an input of line of sight of the operator; an object adaptation time acquisition unit configured to acquire an object adaptation time of each of the extracted object images for which a flag is stored representing that the operator is paying attention, based on a period during which the extracted object is drawn in a predetermined processing period up to the frame of interest; an object adaptation feature amount calculation unit configured to calculate an object adaptation feature amount of each object image based on the acquired object adaptation time, wherein the object adaptation feature amount represents an adaptation weight reflecting the human temporal visual characteristic with respect to the extracted object images; and a color conversion unit configured to perform, for the frame image of interest, color conversion based on the calculated object adaptation feature amount of each object image.