JP2021097348A5 - Image processing device, control method and program - Google Patents

Description

The present invention relates to an image processing apparatus and its control method and program, and more particularly to processing of a plurality of image data for different polarization angles .

In order to solve the above problems, an image processing apparatus of the present invention outputs an optical image of a subject from an imaging device capable of capturing an optical image of a subject obtained through a polarizing filter having regions having a plurality of different polarization angles. acquisition means for acquiring a polarization characteristic for each region corresponding to a pixel of the imaging device based on a plurality of image data for each different polarization angle; and a plurality of regions having similar polarization characteristics obtained by the acquisition means. as one adjustment area.

In the above-described embodiment, a digital camera is assumed as an example of an image capturing apparatus that implements the present invention, but the present invention is not limited to this. For example, it may be configured to employ an image processing device other than a digital camera, such as a portable device such as a digital video camera or a smart phone, a wearable terminal, an in-vehicle camera, or a security camera.

Claims (8)

The imaging is performed based on a plurality of image data for each different polarization angle output from an imaging device capable of imaging an optical image of a subject obtained through a polarizing filter having regions having a plurality of different polarization angles. Acquisition means for acquiring a polarization characteristic for each region corresponding to a pixel of the element;
and determining means for determining, as one adjustment area, the plurality of areas having similar polarization characteristics obtained by the obtaining means . 2. The method according to claim 1, wherein the obtaining means calculates an angle-dependent component of the polarization angle that indicates a change in luminance with respect to the plurality of polarization angles, and obtains the polarization characteristic based on the angle-dependent component. image processing device . 3. The image processing according to claim 2, wherein said determining means determines, as said polarization characteristic, a plurality of areas in which a maximum value of said angle dependent component is equal to or greater than a predetermined threshold as said one adjustment area. device . 4. The image processing apparatus according to claim 3, wherein the predetermined threshold value can be changed based on a user's operation input or conditions predetermined in the image processing apparatus . 5. The determination means determines, as one adjustment area, a plurality of areas corresponding to a predetermined polarization angle based on the polarization angle at which the angle dependent component is maximized. The image processing device according to . a synthesizing means for synthesizing the plurality of image data with different polarization angles to generate a synthetic image;
6. The image processing apparatus according to any one of claims 1 to 5, wherein said synthesizing means determines a synthesizing ratio of said plurality of image data based on said polarization characteristics in said adjustment area. an obtaining step of obtaining a polarization characteristic for each region corresponding to a pixel of the imaging device based on a plurality of image data for different polarization angles output from the imaging device;
and a determination step of determining a plurality of regions having similar polarization characteristics obtained in the acquisition step as one adjustment region. A computer-readable program for causing a computer to execute the control method according to claim 7.