Image pickup system, image processing method, and recording medium
AssigneeOlympus Corporation
InventorTetsuya Toyoda
Life of this patent
Estimating the term…
Abstract
An image pickup system includes an image pickup section configured to pick up an optical image formed by an interchangeable lens and output picked-up image data having a predetermined sampling frequency, a super-resolution synthesizing section and a resizing section configured to generate image data having higher resolution from picked-up image data corresponding to a partial region in a screen, and a control section configured to determine, on the basis of an MTF characteristic value corresponding to the partial region among a plurality of MTF characteristic values and the predetermined sampling frequency, an upper limit of the resolution of the generated image data.
Claims10
An image pickup system in which an interchangeable lens is detachably attached to a camera main body, the image pickup system comprising:
- an image pickup circuit provided in the camera main body and configured to pick up, on an image pickup plane on which a plurality of pixels are arrayed, an optical image formed by the interchangeable lens and output picked-up image data with a predetermined sampling frequency;
- a resolution changing circuit configured to generate, on the basis of the picked-up image data corresponding to a partial region in a screen obtained from the image pickup circuit, image data with resolution higher than resolution of the picked-up image data;
- and
- a control circuit configured to determine, on the basis of an MTF characteristic value corresponding to the partial region among a plurality of MTF characteristic values corresponding to a plurality of regions in the screen of the interchangeable lens and the predetermined sampling frequency, an upper limit of the resolution of the image data generated by the resolution changing circuit.
An image processing method for processing picked-up image data obtained from an image pickup system, in which an interchangeable lens is detachably attached to a camera main body, including an image pickup circuit configured to pick up, on an image pickup plane on which a plurality of pixels are arrayed, an optical image formed by the interchangeable lens and output the picked-up image data with a predetermined sampling frequency, the image processing method comprising:
- a resolution changing step for generating, on the basis of the picked-up image data corresponding to a partial region in a screen, image data with resolution higher than resolution of the picked-up image data;
- and
- a control step for determining, on the basis of an MTF characteristic value corresponding to the partial region among a plurality of MTF characteristic values corresponding to a plurality of regions in the screen of the interchangeable lens and the predetermined sampling frequency, an upper limit of the resolution of the image data generated by the resolution changing step.
A non-transitory computer-readable medium storing an image processing program for causing a computer to process picked-up image data obtained from an image pickup system, in which an interchangeable lens is detachably attached to a camera main body, including an image pickup circuit configured to pick up, on an image pickup plane on which a plurality of pixels are arrayed, an optical image formed by the interchangeable lens and output the picked-up image data with a predetermined sampling frequency, the image processing program comprising:
- a resolution changing step for generating, on the basis of the picked-up image data corresponding to a partial region in a screen, image data with resolution higher than resolution of the picked-up image data;
- and
- a control step for determining, on the basis of an MTF characteristic value corresponding to the partial region among a plurality of MTF characteristic values corresponding to a plurality of regions in the screen of the interchangeable lens and the predetermined sampling frequency, an upper limit of the resolution of the image data generated by the resolution changing step.
Dependencies are inferred from the claim text.