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Image synthesis device and image synthesis method

An image synthesis and image technology, applied in image enhancement, image analysis, image communication, etc., can solve the problems of time-consuming detection, inability to detect and remove pixel defects and defects efficiently, and achieve the effect of efficient detection and removal

Active Publication Date: 2018-04-03
OLYMPUS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the technology proposed in Patent Document 3 is used to solve this problem, the effect is small when the number of images taken to detect defective pixels is small, and the suddenness of the problem occurs when the number of images taken is large. Detection of pixel defects takes time
Furthermore, when the technology proposed in Patent Document 4 is used, when the light and dark edge portions of the subject are averaged, the level rises to cause false corrections.
Also, since only the same color is detected, small subjects such as stars may also be judged as defects
Therefore, in the prior art, in the case of sudden pixel defects, it is impossible to efficiently detect and remove the influence of pixel defects

Method used

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  • Image synthesis device and image synthesis method
  • Image synthesis device and image synthesis method

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Embodiment Construction

[0022] Hereinafter, preferred embodiments will be described using a camera to which the present invention is applied. The camera according to the preferred embodiment of the present invention is a digital camera. Roughly speaking, image data based on image data read out from the imaging element (image sensor 4 ) is displayed in live view on the display portion, and the image data is displayed in accordance with the operation of the release button. The image data after image processing for recording is recorded in the external memory. In addition, when the comparatively bright composite mode is set, a plurality of images are continuously captured, the brightness of the corresponding pixels (pixels at the same position) are compared, and if the brightness is brighter, the image data of the pixel of interest is replaced. On the other hand, when it is not bright, the image data is not replaced with the image data of the pixel of interest, and image composition is performed (this i...

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Abstract

The present invention provides an image synthesis device and an image synthesis method, which can efficiently detect and remove the influence of pixel defects even in the case of sudden pixel defects. The image synthesizing device has: an image acquisition unit (12) that acquires first image data and second image data; A part obtains the differential value of each pixel; the filter processing part (15), which performs filtering processing based on the spatial frequency of the image for the differential value; At least a part of the second image data is composited on at least a part of the second image data.

Description

technical field [0001] The present invention relates to an image synthesizing apparatus, an image synthesizing method, and a program for removing the influence of sudden pixel defects when synthesizing a plurality of pieces of image data. Background technique [0002] In recent years, there has been proposed an imaging device that acquires a plurality of pieces of image data at predetermined time intervals, accumulates the plurality of pieces of image data, and performs additive synthesis to monitor captured images during bulb shooting (for example, see Japanese Laid-Open Patent Publication No. 2005-117395 ( The following is Patent Document 1)), an image synthesizing device that compares the luminance of each pixel of a plurality of pieces of image data and selects the luminance of a pixel with a higher luminance level to perform image composition (for example, refer to Japanese Patent No. 4148586 (the following). There are various image synthesizing apparatuses that perform...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232H04N9/04H04N5/21H04N5/367H04N23/12
CPCG06T2207/10024G06T2207/20221G06T2207/20224H04N1/6027G06T5/50H04N1/6002
Inventor 细野兼矢岩崎宏明松桥贵之市川学
Owner OLYMPUS CORP