Image processing device, image processing method and storage medium

摘要

An image processing device includes: processing pixel group determination unit that determines a to-be-processed pixel group from a plurality of frame images of picture signals input based on a first predetermined rule and that determines a processed pixel group from the processed frame image stored based on a second predetermined rule; frequency component processing unit that extracts at least a temporal frequency component from the to-be-processed pixel group and the processed pixel group, that executes predetermined coefficient processing on a temporal high-frequency component of the temporal frequency component and that acquires the executed to-be-processed pixel group; processing completion frame generation unit that generates a processing completion frame image from the executed to-be-processed pixel group; and image output unit that outputs the processing completion frame image and that stores the processing completion frame image in the processed frame storage unit, in which the frequency component processing unit prevents the predetermined coefficient processing from being executed on a component having low sensitivity in visual characteristic included in the temporal high-frequency component.

主权项

1. An image processing device comprising:
image input unit that inputs picture signals comprising a plurality of frame images from outside; processed frame storage unit that stores a processed frame image on which image processing has already been completed; a processor which functions as:
processing pixel group determination unit that determines a to-be-processed pixel group from the plurality of frame images of the picture signals input from the image input unit based on a first predetermined rule and that determines a processed pixel group from the processed frame image stored in the processed frame storage unit based on a second predetermined rule;frequency component processing unit that extracts at least a temporal frequency component from the to-be-processed pixel group and the processed pixel group determined by the processing pixel group determination unit, that executes predetermined coefficient processing on a temporal high-frequency component of the extracted temporal frequency component and that acquires the executed to-be-processed pixel group on which the predetermined coefficient processing has been executed; andprocessing completion frame generation unit that generates a processing completion frame image from the executed to-be-processed pixel group acquired by the frequency component processing unit; and image output unit that outputs to the outside the processing completion frame image generated by the processing completion frame generation unit and that stores, as the processed frame image, the processing completion frame image in the processed frame storage unit, wherein the frequency component processing unit prevents the predetermined coefficient processing from being executed on a component having low sensitivity in visual characteristic included in the temporal high-frequency component, wherein the predetermined coefficient processing is processing in which an absolute value of the frequency component and a predetermined threshold value are compared, and when the absolute value of the frequency component is more than the threshold value, the frequency component is maintained and when the absolute value of the frequency component is not more than the threshold value, a predetermined value is substituted for the frequency component.