Image processing device, method of controlling image processing device, and display device

A method of controlling an image processing device configured to generate a first image and a second image so that first pixels constituting the first image and second pixels constituting the second image are displayed so as to be shifted from each other, the method comprising:

• executing a filter process of limiting a frequency band of an image signal of an input image with a one-dimensional filter to generate an intermediate image;
• expanding the intermediate image to generate an expanded image;
• and
• dividing some of pixels constituting the expanded image into the first image and the second image;
• wherein the one-dimensional filter includes a first filter configured as a low-pass filter and a second filter configured as a low-pass filter,
• pixels constituting the input image are arranged in a first direction and a second direction crossing the first direction, and
• a frequency band in the first direction of the input image is limited by the first filter, and a frequency band in the second direction of the input image is limited b the second filter.

A display device comprising:

• a display section configured to display first pixels constituting a first image and second pixels constituting a second image so that the second pixels are shifted with respect to corresponding ones of the first pixels;
• and
• an image processing section configured to generate the first image and the second image, wherein
• the image processing section includes
• a filter processing circuit configured to execute a filter process of limiting a frequency band of an image signal of an input image with a one-dimensional filter to generate an intermediate image,
• an image expanding circuit configured to expand the intermediate image generated by the filter processing circuit to generate an expanded image, and
• an image dividing circuit configured to divide some of pixels constituting the expanded image generated by the image expanding circuit into the first image and the second image;
• wherein the one-dimensional filter includes a first filter configured as a low-pass filter and a second filter configured as a low pass filter,
• pixels constituting the input image are arranged in a first direction and a second direction crossing the first direction, and
• the filter processing circuit comprises a filter processing circuit configured for limiting a frequency band in the first direction of the input image with the first filter, and for limiting a frequency band in the second direction of the input image with the second filter.