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Image generation method and device

An image generation and image technology, applied in the field of image processing, can solve the problems of large distance, low resolution of image sequence, and failure to collect image information, so as to prevent damage and improve resolution

Inactive Publication Date: 2021-11-16
杭州太美星程医药科技有限公司
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  • Application Information

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Problems solved by technology

As a result, in an image sequence, the distance between the corresponding spatial positions of two adjacent images is large, and the image information in between cannot be collected, making the resolution of the image sequence in a specific direction low.

Method used

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Embodiment Construction

[0041] The technical solution in this application will be described below with reference to the accompanying drawings.

[0042] As mentioned above, when obtaining the internal information of a specific object, due to the limitations of practical factors such as cost and adverse effects, it is impossible to collect cross-sectional images of a specific object too densely, resulting in a low resolution of the obtained image sequence in the acquisition direction , it is impossible to directly obtain the image information of the position that has not been actually collected from the image sequence.

[0043] Hereinafter, the above technical problem will be described by taking a CT image in a medical image sequence as an example.

[0044] In many clinical diagnosis scenarios, doctors need to grasp and judge the patient's condition through CT images. However, the process of CT imaging exposes the patient to radiation, putting the patient at risk of cellular damage and even cancer ind...

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Abstract

The invention provides an image generation method and device. The method comprises the steps of acquiring a first image located in front of a target position and a second image located behind the target position from a medical image sequence; performing wavelet decomposition on the first image and the second image to obtain a low-frequency sub-image and a high-frequency sub-image of the first image and a low-frequency sub-image and a high-frequency sub-image of the second image; based on the low-frequency sub-images of the first image and the second image, calculating to obtain a low-frequency interpolation result; based on the high-frequency sub-images of the first image and the second image, calculating to obtain a high-frequency interpolation result; performing wavelet reconstruction on the low-frequency and high-frequency interpolation results to obtain a target image corresponding to the target position; and inserting the target image into the medical image sequence to obtain an expanded medical image sequence. According to the method, the resolution of the medical image sequence in the image arrangement direction can be improved, meanwhile, high-frequency information is effectively prevented from being damaged in the interpolation process, high-precision reduction is achieved, and a more accurate target image is obtained.

Description

technical field [0001] The present application relates to the field of image processing, in particular to an image generation method and device. Background technique [0002] By collecting multiple cross-sectional images of an object along a specific direction, the three-dimensional information inside the object (eg, human body, animal, building, etc.) can be obtained. This method is especially commonly used in medical scenarios. For example, in the process of clinical diagnosis, tomographic imaging technologies such as CT and MRI are often used to scan a patient's body layer by layer to obtain a medical image sequence containing image information in the patient's body. [0003] However, due to the limitations of practical factors, it is unrealistic to collect cross-sectional images very densely. For example, when acquiring a patient's CT image sequence, in order to avoid excessive damage to the patient's body during the imaging process, the number of scanning layers must b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01G16H30/20
CPCH04N7/0127G16H30/20
Inventor 蔡鑫崔亚轩
Owner 杭州太美星程医药科技有限公司
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