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IMAGE PROCESSING APPARATUS and CONTROL METHOD THEREFOR

A technology of image processing equipment and control methods, which is applied in the directions of image communication, printing devices, instruments, etc., and can solve problems such as inability to perform optimal correction

Inactive Publication Date: 2016-03-16
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this creates a problem that optimal correction cannot be performed if the first correction member and the second correction member cannot be driven in coordination

Method used

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  • IMAGE PROCESSING APPARATUS and CONTROL METHOD THEREFOR
  • IMAGE PROCESSING APPARATUS and CONTROL METHOD THEREFOR
  • IMAGE PROCESSING APPARATUS and CONTROL METHOD THEREFOR

Examples

Experimental program
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Effect test

no. 1 example

[0024] figure 1 The configuration of an imaging apparatus according to a first embodiment of the present invention is shown. figure 1 The image pickup device shown is a digital still camera. It should be noted that the imaging apparatus according to the present embodiment may have a moving image capturing function.

[0025] figure 1 The illustrated imaging apparatus includes a zoom unit 101 to a control unit 119 . The zoom unit 101 is a part of a variable-magnification imaging lens constituting an imaging optical system. The zoom unit 101 includes a zoom lens that changes the magnification of an imaging lens. The zoom driving unit 102 controls the driving of the zoom unit 101 under the control of the control unit 119 . The first shake correction lens 103 is a correction member that corrects image blur. The first shake correction lens 103 is configured to be movable in a direction perpendicular to the optical axis of the imaging lens. The first shake correction lens driv...

no. 2 example

[0082] A second embodiment will now be described. In the second embodiment described below, the shake correction amount (indicated drive amount) is used to make the drive amplitude of the second shake correction lens coincide with that of the first shake correction lens. In the present embodiment, constituent components configured in the same manner as their counterparts in the first embodiment are given the same reference numerals, and explanations for these constituent components are omitted.

[0083] Figure 10 A block diagram related to shake correction according to the second embodiment is shown. Although the driving of the first shake correction lens is the same as that of the first embodiment, the control of the second shake correction lens is different from that of the first embodiment.

[0084] LPF 301 extracts low-frequency components from the vibration signal detected by first vibration sensor 201 . The subtractor 300 extracts high frequency components from the c...

no. 3 example

[0087] The first embodiment and the second embodiment only make the amplitude of the second shake correction lens consistent; however, in the case where the driving of the first shake correcting lens and the driving of the second shake correcting lens have different frequency response characteristics, although the amplitude Same, but residual blur in image stabilization due to offset between drive phases (image stabilization phases). The third embodiment described below introduces a method of not only using the shake correction amount (indicated drive amount) to make the drive amplitude of the second shake correction lens coincide with that of the first shake correction lens, but also The first shake correction lens and the second shake correction lens are made to coincide in phase. In the present embodiment, constituent components configured in the same manner as their counterparts in the first embodiment and the second embodiment are given the same reference numerals, and ex...

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PUM

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Abstract

An image processing apparatus, comprises a setting unit that sets an image stabilization gain of a first image stabilization unit and an image stabilization gain of a second image stabilization unit, the first and second image stabilization units correcting an image blur of a subject image generated by a shake of the apparatus, wherein when the first and second image stabilization units are driven such that the first and second image stabilization units are a different phase with each other by 180 degrees, the setting unit sets the image stabilization gain of the second image stabilization unit such that an amount of a remaining blur in an image is a local minimum.

Description

technical field [0001] The present invention relates to an image processing device with image stabilization. Background technique [0002] In some cases, when imaging is performed using an imaging apparatus such as a digital camera, shaking of a subject image (image blur) occurs due to shaking of a user's hand holding the camera body (due to occurrence of camera shake). An imaging apparatus having an image stabilization mechanism to correct such image blur has been proposed. [0003] Conventional examples of correction processing performed by an image stabilization mechanism include optical image stabilization processing and electronic image stabilization processing. In the optical image stabilization process, an angular velocity sensor or the like is used to detect vibration applied to the camera body, and a shake correction lens provided inside the imaging optical system is moved based on the detection result. In this way, the direction of the optical axis of the imaging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
CPCG02B27/646G03B5/02G03B2205/0015H04N23/6812H04N23/687
Inventor 野口雅彰
Owner CANON KK