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Distance sampling method and device, equipment and storage medium

A distance and sampling point technology, applied in the field of image processing, can solve the problems of low efficiency of distance sampling algorithm and low overall performance of physical rendering algorithm.

Pending Publication Date: 2021-04-16
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, the distance sampling algorithm has the problem of low efficiency, which makes the overall performance of the physical rendering algorithm low

Method used

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  • Distance sampling method and device, equipment and storage medium
  • Distance sampling method and device, equipment and storage medium
  • Distance sampling method and device, equipment and storage medium

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Embodiment Construction

[0053] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0054] The distance sampling method provided by this application can be applied to such as figure 1 shown in the application environment. Wherein, the computer equipment may include but not limited to various personal computers, notebook computers, smart phones, tablet computers and portable wearable devices. Among them, the internal structure of computer equipment can be found in figure 1 as shown, figure 1The processor in is used to provide computing and control capabilities. Storage includes non-volatile storage media and internal storage. The non-volatile storage ...

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Abstract

The invention relates to a distance sampling method and device, computer equipment and a storage medium. The method comprises the steps: dividing three-dimensional data of a target object into a plurality of data blocks, compensating virtual particles for voxel points in each data block, enabling each data block to generate a uniform data block of which the attenuation coefficient of each voxel point is the maximum attenuation coefficient, and storing the uniform data block in the storage medium; and then determining a target sampling point in a predetermined light transmission direction according to the attenuation distance between the light starting point and the maximum attenuation coefficient, and if the target sampling point is a real particle of an uncompensated virtual particle, determining distance sampling as effective distance sampling. According to the method, quick positioning of the target sampling point is realized, the distance sampling speed is quickly increased, and the overall performance of a physical rendering algorithm is greatly improved.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a distance sampling method, device, equipment and storage medium. Background technique [0002] Physical rendering technology is to simulate the real scene and then mathematically model the real propagation and interaction behavior of light in the physical medium to complete the high-fidelity rendering of the scene. [0003] Taking the medical field as an example, when rendering 3D medical image data, it is of great clinical significance to ensure the real-time interactivity and low latency of the rendered image for users to view in real time. Among them, the progressive physical rendering technology based on Monte Carlo rendering can render the final 2D image with high signal-to-noise ratio after multiple rendering iterations. In the physical rendering algorithm based on Monte Carlo, there are different light transmission methods such as direct illumination, surface sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00
Inventor 张晓健
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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