JP2013157674A5

JP2013157674A5 -

Info

Publication number: JP2013157674A5
Application number: JP2012014570A
Authority: JP
Filing date: 2012-01-26
Publication date: 2015-03-12
Anticipated expiration: 2032-01-26

Description

上記目的を達成するために、本発明の撮像装置は、撮影光学系と、前記撮影光学系の予定結像面に配設され、各画素が、ボケの大きさに関わらず高周波域のゲインが落ちない形状を有する光電変換部を含む、複数の画素から成る撮像素子と、前記撮影光学系の光学伝達特性を用いて、前記撮像素子から得られた画像の予め決められた領域毎にボケ特性を解析することにより、前記領域毎の被写体までの距離を演算する距離演算手段と、前記画像と、前記領域毎の距離とに基づいて、前記画像に含まれる各被写体に合焦した合焦画像を生成する合焦画像生成手段と、前記領域毎の距離と、前記合焦画像とから、指定されたボケ状態の画像を生成するリフォーカス画像演算手段とを有する。 In order to achieve the above object, an imaging apparatus according to the present invention is provided on a photographic optical system and a predetermined imaging plane of the photographic optical system, and each pixel has a high frequency gain regardless of the size of blur. including a photoelectric conversion unit having not Na fallen shape, an imaging element comprising a plurality of pixels, by using the optical transfer characteristics of the imaging optical system, for each predetermined region of an image obtained from the imaging device By analyzing the blur characteristics, based on the distance calculation means for calculating the distance to the subject for each area, the image, and the distance for each area, the focus on each subject included in the image is focused. A focused image generating unit configured to generate a focused image; and a refocus image calculating unit configured to generate an image in a specified blurred state from the distance for each region and the focused image.

Claims

Photographic optics,
The imaging optical system is disposed on the predetermined imaging plane of each pixel, the blur of the regardless of the size including a photoelectric conversion unit having a high-frequency region of the shape gain have is Na fallen, the imaging device comprising a plurality of pixels When,
Distance calculation means for calculating the distance to the subject in each region by analyzing the blur characteristic for each predetermined region of the image obtained from the image sensor using the optical transfer characteristic of the photographing optical system When,
A focused image generating unit configured to generate a focused image focused on each subject included in the image based on the image and the distance for each region;
An image pickup apparatus comprising: a refocus image calculation unit configured to generate an image in a specified blurred state from the distance for each region and the focused image.

Each of the pixels has a plurality of photoelectric conversion units that can independently read a signal corresponding to the accumulated charge,
The distance calculation means uses the optical transfer characteristic of the photographing optical system to analyze the blur characteristic for each predetermined region of the plurality of images represented by the signals obtained from the plurality of photoelectric conversion units, Calculate the distance to the subject for each area,
The focused image generation unit generates a focused image focused on each subject included in the plurality of images based on the plurality of images and the distance for each region. The imaging apparatus according to 1.

The imaging device according to claim 2, wherein the imaging device is configured such that zero points of a plurality of optical transfer characteristics corresponding to the plurality of photoelectric conversion units are different at the same frequency.

Photographic optics,
Wherein disposed in the predetermined imaging plane of the photographing optical system, each pixel, a photoelectric conversion portion which is covered by the light shielding means having an opening having a blur of magnitude regardless high frequency range of the gain falls Na have shape An imaging device comprising a plurality of pixels,
Distance calculation means for calculating the distance to the subject in each region by analyzing the blur characteristic for each predetermined region of the image obtained from the image sensor using the optical transfer characteristic of the photographing optical system When,
A focused image generating unit configured to generate a focused image focused on each subject included in the image based on the image and the distance for each region;
An image pickup apparatus comprising: a refocus image calculation unit configured to generate an image in a specified blurred state from the distance for each region and the focused image.