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Image processing apparatus and image processing method

A device, a technology of tomographic images, applied in the field of image processing

Active Publication Date: 2015-01-28
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above-mentioned Japanese Patent Laid-Open No. 2008-073099 displays the OCT tomographic image and the layer boundary corresponding to the position specified on the fundus image, but this only shows the A tomographic image of a specified position and its boundary

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  • Image processing apparatus and image processing method
  • Image processing apparatus and image processing method

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no. 1 example

[0020] The following will refer to figure 1 The configuration of the image processing apparatus according to the present embodiment will be described. The image processing apparatus 10 sets a reference tomographic plane representing a plurality of tomographic images including a plurality of tomographic images obtained by tomographic imaging of the subject's eye and generates, for example, parallel tomographic images having a predetermined positional relationship based on the reference tomographic plane. The reference tomographic plane of the tomographic image group. The apparatus selects a tomographic image of a position designated by the operator, and a tomographic image of a position in the eye that is structurally symmetrical to the designated position. Then, the image processing apparatus displays these tomographic images in parallel, thereby performing image processing for assisting the process of judging whether the information obtained from the tomographic images is d...

no. 2 example

[0051] The second embodiment will explain a configuration in which a measurement unit 245 is added to the configuration of the first embodiment and some operations of the feature extraction unit 243 are changed. Unlike the first embodiment, the feature extraction unit 2431 extracts the boundaries of the respective layers from the retinal layers, the measurement unit 245 measures the layer thickness difference between the tomographic image 1 and the tomographic image 2 structurally symmetrical to the tomographic image 1, and the display unit 270 displays difference information representing difference measurements.

[0052] Figure 6 is a block diagram showing the functional configuration of the image processing apparatus 11 of the present embodiment. Figure 6 The image processing unit 206 shown includes a position alignment unit 241 , a projected image generation unit 242 , a feature extraction unit 2431 , a reference tomographic plane setting unit 244 and a measurement unit ...

no. 3 example

[0062] In this embodiment, unlike the control unit 207 of the second embodiment, the control unit 208 includes a first image generation unit 211 and a second image generation unit 212, and does not include a first tomographic image selection unit 201 and a second tomographic image selection unit 201. Select unit 202 . In this embodiment, a tomographic image at an arbitrary position and an arbitrary direction designated by the operator is generated in real time from a group of tomographic images (volume data) of the retina of the subject's eye captured in advance. Then, tomographic images that are symmetrical to the tomographic image with respect to the reference tomographic plane are generated, and these tomographic images are displayed side by side. In this case, since there is no need to generate images in advance, the memory size required to store the images can be reduced, and the processing time required until the first tomographic image is displayed can be reduced.

[0...

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Abstract

An image processing apparatus has an acquisition unit which acquires a second tomogram related to a first tomogram of an eye to be examined based on position information of an eye fundus of the eye to be examined according to a predetermined rule; and a display control unit which displays the first tomogram and the second tomogram on a display unit.

Description

technical field [0001] The present invention relates to an image processing technique that assists image processing of the eye, and more particularly, to an image processing device, an image processing method, and a program that perform image processing using a tomographic image of the eye. Background technique [0002] A tomographic imaging apparatus for the eye such as OCT (Optical Coherence Tomography) allows three-dimensional observation of the state inside the retinal layer. In recent years, since this tomographic imaging apparatus for eyes is effective in giving a more appropriate diagnosis of a disease, it has received a lot of attention. [0003] Figure 3A A tomographic image of the retina captured by OCT is shown. refer to Figure 3A , reference symbol T 1 ~T n A two-dimensional tomographic image (B-scan image) showing the macular region. Reference sign D denotes the optic nerve head; and reference sign M denotes the macular area. Reference numeral 1 denote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/10A61B3/12A61B3/14
CPCG06T19/00A61B3/0025A61B3/102G06T2207/30041G06T7/0012A61B3/1225G06T2207/10101A61B3/0058G06T2219/008A61B3/10A61B3/12G01B9/02
Inventor 岩濑好彦片山昭宏
Owner CANON KK