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Image generating apparatus and image generating method

a technology which is applied in the field of image generating apparatus and image generating method, can solve the problem of requiring additional parts

Inactive Publication Date: 2015-10-29
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a new technique for generating an image for observation suitable for observing and diagnosing a subject by image processing from an original image obtained by imaging the subject. This is achieved by generating a plurality of viewpoint images with different line-of-sight directions and using them to extract or enhance a scattered light component in the original image. This allows for the observation image to be generated without requiring additional parts or modifying optical systems and exposure conditions. The invention has cost-related and convenience issues related to traditional methods, and offers a novel solution to generate an image suitable for diagnosis and treatment.

Problems solved by technology

However, the conventional art described above has the following problems.
Therefore, there is a cost-related issue in that an optical microscope for bright-field observation requires additional parts and an issue of inconvenience in that photography requires optical systems and exposure conditions to be modified.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Scattered Image Extraction Setting Screen

[0163]FIGS. 7A and 7B show examples of setting screens of a scattering image extracting function according to Example 1.

[0164]After selecting a region 207 in a displayed image in the image display application shown in FIG. 2 using a mouse, an item named “viewpoint-decomposed scattering image extraction” (not shown) is selected from an extensions menu 208 that is displayed by a right click of the mouse. In response thereto, a new window 700 (FIG. 7A) showing images before and after the scattering image extraction processing and a scattering image extraction processing setting screen 703 (FIG. 7B) are displayed. The image in the region 207 is displayed in a left-side region 701 of the window 700 and an image resulting from the scattering image extraction processing is displayed in a right-side region 702 of the window 700.

[0165]The setting screen 703 is operated when modifying settings of the scattering image extracting function. When the user ...

example 2

[0231]In the present example, a method of extracting a viewpoint scattering image by a computation between viewpoint images with a plurality of viewpoints with a same polar angle θ but different observation angles φ in the viewpoint scattering image extraction processing step S903 will be described.

[0232]As already described with reference to Expression 11, by performing subtraction between a viewpoint image with a prescribed viewpoint (s, t) and a viewpoint image with a viewpoint having a same polar angle θ but a different observation angle, information related to grayscale due to a difference in transmittance of the sample is canceled and a scattering image can be extracted efficiently.

[0233]FIG. 16 is a flow chart showing internal processing of the viewpoint scattering image extraction processing S903 according to the present example. Hereinafter, an extraction method of a scattering image of each viewpoint image will be described with reference to FIG. 16.

[0234]First, in an obse...

example 3

[0245]In Examples 1 and 2, methods of calculating a viewpoint scattering synthesized image have been described. In the present example, a description will be given on a method of generating an observation image in which information on scattered light is enhanced and a depth of field is increased by compositing a viewpoint scattering synthesized image onto an original image (a layer image at Z=Zf that is a focus position in a Z stack image).

[0246]In Example 1, it has been described that a difference in transmitted light intensity between viewpoint images when varying viewpoints is very small and a scattering image representing surface unevenness can be generated by calculating a difference between viewpoint images. However, when a thickness of a sample is large, the number of objects existing at depths that differ from the position in focus (the focus position Zf) increases and information on blur of such objects may be retained in a scattering image. In addition, when an observation...

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PUM

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Abstract

An image generating apparatus which generates an observation image from an original image obtained by imaging a subject, has a viewpoint image generating unit configured to generate a plurality of viewpoint images having mutually different line-of-sight directions by using the original image; and an observation image generating unit configured to generate an image, for which a scattered light component included in the original image has been extracted or enhanced, as the observation image by using the plurality of viewpoint images. The observation image is generated, for example, by extracting or enhancing a difference among the plurality of viewpoint images.

Description

TECHNICAL FIELD[0001]The present invention relates to an image generating apparatus and an image generating method for generating an image suitable for observation from an image obtained by imaging a subject.BACKGROUND ART[0002]In the field of pathology, there are virtual slide systems which capture and digitize an image of a test sample placed on a prepared slide to enable pathological diagnosis on a display as an alternative to optical microscopes that are pathological diagnostic tools. Digitization of a pathological diagnostic image by a virtual slide system enables a conventional optical microscopic image of a test sample to be handled as digital data. As a result, advantages such as expediting of remote diagnosis, explanation to patients using digital images, sharing of rare cases, and improved efficiency in teaching and learning can be achieved.[0003]In addition, since a wide variety of image processing can be performed on digital data, various diagnosis supporting functions f...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06T7/00
CPCG06T7/0014G06T7/0097G06T2207/20221G06T2207/10056G06T2207/10148G06T2200/21G02B21/365G06T5/50G06T2207/30024G06T2207/30056G06T5/73G06T2207/10004H04N23/80G06T5/00G06T5/70
Inventor MURAKAMI, TOMOCHIKA
Owner CANON KK