Image processing device and method and program

An image processing method for processing a moving image shot by a video shooting device in increments of the moving image, comprising:

• correcting at least one access element to be processed by
• changing properties of a low-pass filter indicating an imaging blur according to parameter values describing properties of the imaging blur occurring at a time that the moving image is shot by the video shooting device,
• generating an inverse filter having properties corresponding to an inverse transfer function of the low-pass filter,
• processing the at least one access element by applying the inverse filter as to the access element;
• converting the properties of the low-pass filter into properties according to one or more parameter values detected by a detector, and outputting a spatial region signal;
• converting the low-pass filter generated as a spatial region signal into a first signal of a frequency region;
• generating, based on the first signal, a second signal, the second signal having frequency properties corresponding to the inverse filter in a first frequency band not including a frequency with a gain of zero, and having frequency properties with amplitude thereof below a predetermined value in a second frequency band including a frequency with a gain of zero;
• converting the second signal into an output filter;
• and
• filtering the access element by applying the output filter to the access element,
• wherein a frequency property of the low-pass filter contains at least one frequency with a gain of zero, and
• wherein the inverse filter is frequency component of the access element has a gain of zero.

A non-transitory computer readable medium having stored thereon a program that, when executed, causes a computer to process a moving image shot by a predetermined video shooting device, in increments of the moving image, the program comprising the steps of:

• correcting at least one access element to be processed by
• changing properties of a low-pass filter indicating an imaging blur according to parameter values describing properties of the imaging blur occurring at a time that the moving image is shot by the video shooting device,
• generating an inverse filter having properties corresponding to an inverse transfer function of the low-pass filter, and
• processing the at least one access element by applying the inverse filter as to the access element;
• converting the properties of the low-pass filter into properties according to one or more parameter values detected by a detector, and outputting a spatial region signal;
• converting the low-pass filter generated as a spatial region signal into a first signal of a frequency region;
• generating, based on the first signal, a second signal, the second signal having frequency properties corresponding to the inverse filter in a first frequency band not including a frequency with a gain of zero, and having frequency properties with amplitude thereof below a predetermined value in a second frequency band including a frequency with a gain of zero;
• converting the second signal into an output filter;
• and
• filtering the access element by applying the output filter to the access element,
• wherein a frequency property of the low-pass filter contains at least one frequency with a gain of zero, and wherein the inverse filter is not applied when a frequency component of the access element has a gain of zero.

An image processing device configured to process a moving image shot by a video shooting device in increments of the moving image comprising:

• a processor;
• and
• a correcting unit comprising:
• a low-pass filter property converting unit that converts the properties of the lowpass filter into properties according to one or more parameter values detected by a detecting unit, and outputs a spatial region signal;
• a frequency converting unit that converts the low-pass filter generated as a spatial region signal into a first signal of a frequency region with the low-pass filter property converting unit;
• a signal generating unit configured to generate, based on the first signal, a second signal, the second signal having frequency properties corresponding to the inverse filter in a first frequency band not including a frequency with a gain of zero, and having frequency properties with amplitude thereof below a predetermined value in a second frequency band including a frequency with a gain of zero;
• a frequency inverse conversion unit that converts the second signal into an output filter;
• and
• a filtering unit that corrects the access element by applying the output filter to the access element,
• the correcting unit correcting at least one access element by
• changing properties of a low-pass filter indicating an imaging blur according to parameter values describing properties of the imaging blur occurring at a time that the moving image is shot by the video shooting device,
• generating an inverse filter having properties corresponding to an inverse transfer function of the low-pass filter, and
• processing the at least one access element by applying the inverse filter to the access element;
• wherein a frequency property of the low-pass filter contains at least one frequency with a gain of zero, and wherein the inverse filter is not applied when a frequency component of the access element has a gain of zero.