IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

• US 20130222649A1
• Filed: 04/09/2013
• Published: 08/29/2013
• Est. Priority Date: 06/02/2008
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hattori, Mitsuaki
• Application Number:
  US13/859,256
• Publication Number:
  US 20130222649A1
• Time in Patent Office: Days
• US Class Current: 348/240.2
• CPC Class Codes: G06T 11/00 2D [Two Dimensional] image generation
• CPC Class Codes: G06T 2210/22 Cropping
• CPC Class Codes: H04N 3/23 Distortion correction, e.g. for pincushion distortion correction, S-correction
• CPC Class Codes: H04N 5/2628 Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation

Abstract

An image processing apparatus which includes an image processing unit and a system control unit, wherein this system control unit adds information for determining an image height reference position of an image before cropping processing is performed to an image cropped by the image processing unit, and records the resultant image in an external storage device. Alternatively, information for determining an image height reference position of an image before rotation processing is performed is added to an image rotated by the image processing unit, and the resultant image is recorded in an external storage device.

Claims

1. An image processing apparatus comprising:

an image processing unit configured to perform,

(1) cropping processing on a part of an image, which the cropping processing on a part of a first image which is created by an image sensor converting light passing through a lens, to generate a second image;

(2) rotation processing for rotating the second image to generate a third image; and

a control unit configured to,

(3) calculate coordinates of the center of the radially changing optical characteristics of the lens in the first image when coordinates of a predetermined pixel of the third image are used as an origin and record the calculated coordinates.

2. The image processing apparatus according to claim 1, wherein the image processing unit is configured to perform variable magnification processing for enlarging or reducing either one of the second or third image, and the control unit records information indicating a magnification ratio in the variable magnification processing performed on either one of the second or third image.

3. An image processing method comprising:

via an image processing unit, performing,

(1) cropping processing on a part of a first image, which is created by an image sensor converting light passing through a lens, to generate a second image, and

(2) rotation processing for rotating the second image to generate a third image and,

via a control unit, performing,

(3) calculating coordinates of the center of the radially changing optical characteristics of the lens in the first image when coordinates of a predetermined pixel of the third image are used as an origin and record the calculated coordinates.

4. The image processing method according to claim 3, further including performing variable magnification processing for enlarging or reducing either one of the second or third image, and recording information indicating a magnification ratio in the variable magnification processing performed on either one of the second or third image.