JP2015041819A5

JP2015041819A5 -

Info

Publication number: JP2015041819A5
Application number: JP2013170818A
Authority: JP
Filing date: 2013-08-20
Publication date: 2016-09-15
Anticipated expiration: 2033-08-20

Description

本発明は、上記課題に鑑みてなされ、その目的は、防振処理に要する演算量を削減し、消費電力を抑える技術を実現することである。 The present invention has been made in view of the above problems, its object is to reduce the calculation amount required for the anti-vibration processing, implementing the techniques to reduce power consumption.

上記課題を解決し、目的を達成するために、本発明の撮像装置は、画像の像振れを補正する撮像装置であって、画像を撮影する撮像手段と、前記撮像手段による撮影パラメータを取得する取得手段と、前記撮像手段から得られる第１の画像と第２の画像から動きベクトルを検出する動きベクトル検出手段と、前記動きベクトル検出手段により検出された動きベクトルを用いて、前記第１の画像と前記第２の画像の間の像振れを幾何変形パラメータとして推定する幾何変形パラメータ推定手段と、前記幾何変形パラメータ推定手段により推定された幾何変形パラメータを用いて前記第１の画像と前記第２の画像に幾何変形を施して像振れを補正する幾何変形手段と、前記撮影パラメータに基づいて、前記動きベクトル検出手段による動きベクトルの検出方法と前記幾何変形パラメータ推定手段よる幾何変形パラメータ推定方法の少なくとも一方を決定する防振制御手段と、を有する。 In order to solve the above-described problems and achieve the object, an imaging apparatus of the present invention is an imaging apparatus that corrects image shake of an image, and acquires an imaging unit that captures an image, and imaging parameters by the imaging unit. an acquiring unit, a motion vector detecting means for detecting a motion vector from the first image and the second image that obtained from the imaging means, using the motion vector detected by said motion vector detecting means, said first A geometric deformation parameter estimating means for estimating an image shake between the second image and the second image as a geometric deformation parameter, and using the geometric deformation parameter estimated by the geometric deformation parameter estimating means, the first image and the second image Geometric deformation means for correcting image blur by applying geometric deformation to the second image, and a motion vector detected by the motion vector detection means based on the imaging parameters. Having a stabilization control means for determining at least one of the detection method and the geometrical transformation parameter estimation section by geometrical transformation parameter estimation methods.

本発明によれば、防振処理に要する演算量を削減し、消費電力を抑えることができる。 According to the present invention to reduce the computation amount required for the anti-vibration processing, power consumption can be suppressed.

Claims

An imaging apparatus that corrects image shake of an image,
Imaging means for taking an image;
Obtaining means for obtaining imaging parameters by the imaging means;
Motion vector detection means for detecting a motion vector from the first image and the second image that obtained from said image pickup means,
Geometric deformation parameter estimation means for estimating an image shake between the first image and the second image as a geometric deformation parameter using the motion vector detected by the motion vector detection means;
Geometric deformation means for correcting image blur by performing geometric deformation on the first image and the second image using the geometric deformation parameter estimated by the geometric deformation parameter estimation means;
An image stabilization control unit configured to determine at least one of a motion vector detection method by the motion vector detection unit and a geometric deformation parameter estimation method by the geometric deformation parameter estimation unit based on the imaging parameter; Imaging device.

The imaging apparatus according to claim 1, wherein the image stabilization control unit changes at least one of a size and a detection number of a motion vector detection region by the motion vector detection unit according to the imaging parameter. .

The motion component of image blur to be detected by the motion vector detection means includes at least one of translation, rotation, and tilt,
The size of the detection area of the motion vector becomes smaller as the number of types of image blur motion components to be detected by the motion vector detection means decreases.
The imaging apparatus according to claim 2, wherein the number of motion vectors detected decreases as the number of types of image blur motion components to be detected by the motion vector detection unit decreases.

The shooting parameter includes either a focal length or a subject distance of the imaging device,
2. The image stabilization control unit performs control so that the number of types of image blur motion components to be detected by the motion vector detection unit decreases as the focal length increases as the imaging parameter. 4. The imaging device according to any one of items 1 to 3.

The image stabilization control means determines the motion vector detection method and the geometric deformation parameter estimation method using the subject distance when the focal length cannot be obtained as the imaging parameter,
5. The control according to claim 4, wherein when the subject distance is long, control is performed so that there are fewer types of motion components of the image blur that are subject to image stabilization than when the subject distance is short. Imaging device.

The imaging apparatus according to claim 1, wherein the image stabilization control unit changes the number of geometric deformation parameters calculated by the geometric deformation parameter estimation unit according to the imaging parameter.

The shooting parameter includes either a focal length or a subject distance of the imaging device,
7. The image stabilization control unit according to claim 6, wherein the image stabilization control unit controls the number of geometric deformation parameters calculated by the geometric deformation parameter estimation unit to decrease as the focal length increases as the imaging parameter. Imaging device.

The imaging apparatus according to claim 6 or 7, wherein the geometric deformation parameter estimation means performs a smoothing process using a geometric deformation parameter calculated in the past on the calculated geometric deformation parameter.

  Detecting means for detecting a motion vector using a plurality of images;
  Setting means for performing settings relating to detection of a motion vector by the detection means,
  The detecting means detects the motion vector by searching a region corresponding to a reference region set in the second image of the plurality of images from the first image of the plurality of images,
  The image pickup apparatus, wherein the setting unit changes the number of reference regions set in the second image in accordance with a use of the motion vector detected by the detection unit.

The imaging apparatus according to claim 9, wherein the setting unit changes an arrangement of reference regions set in the second image according to a use of the motion vector detected by the detection unit. .

  Detecting means for detecting a motion vector using a plurality of images;
  Setting means for performing settings relating to detection of a motion vector by the detection means,
  The detecting means detects the motion vector by searching a region corresponding to a reference region set in the second image of the plurality of images from the first image of the plurality of images,
  The image pickup apparatus, wherein the setting unit changes an arrangement of reference areas set in the second image in accordance with a use of the motion vector detected by the detection unit.

An image pickup apparatus control method for correcting image blur of an image,
An acquisition step of acquiring imaging parameters by the imaging means;
A motion vector detection step of detecting a motion vector from the first image and the second image that obtained from said image pickup means,
A geometric deformation parameter estimation step for estimating an image shake between the first image and the second image as a geometric deformation parameter using the motion vector detected by the motion vector detection step;
A geometric deformation step of correcting image blur by performing geometric deformation on the first image and the second image using the geometric deformation parameter estimated by the geometric deformation parameter estimating step;
A vibration vector control step of determining at least one of a motion vector detection method by the motion vector detection step and a geometric deformation parameter estimation method by the geometric deformation parameter estimation step based on the photographing parameter. Control method of imaging apparatus.

  A detection step of detecting a motion vector using a plurality of images;
  A setting step for performing settings relating to detection of motion vectors in the detection step
  In the detection step, the motion vector is detected by searching a region corresponding to a reference region set in the second image of the plurality of images from the first image of the plurality of images.
  In the setting step, the number of reference regions set in the second image is changed according to the use of the motion vector detected in the detection step.

  A detection step of detecting a motion vector using a plurality of images;
  A setting step for performing settings relating to detection of a motion vector in the detection step,
  In the detection step, the motion vector is detected by searching a region corresponding to a reference region set in the second image of the plurality of images from the first image of the plurality of images.
  In the setting step, the arrangement of the reference region set in the second image is changed according to the use of the motion vector detected in the detection step.

The program for functioning a computer as each means of the imaging device described in any one of Claims 1 thru | or 11 .

A storage medium storing a program for causing a computer to function as each unit of the imaging apparatus according to any one of claims 1 to 11 .