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Geometric figure view frustum implementation method and device for smart city OCC tree and storage medium

A technology of geometric figures and implementation methods, applied in the field of 3D rendering, can solve the problems of occupying memory, taking a long time, and being unable to handle dynamic model culling, etc.

Inactive Publication Date: 2021-04-20
BEIJING ZHIU TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing visibility calculation algorithms are generally conservative and cannot handle dynamic model culling. Because they will be baked pixel by pixel, it takes a long time and requires additional memory. Debugging tools need to be developed by themselves

Method used

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  • Geometric figure view frustum implementation method and device for smart city OCC tree and storage medium
  • Geometric figure view frustum implementation method and device for smart city OCC tree and storage medium

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] The present invention provides a method, a system, and a computer-readable storage medium for realizing a geometric frustum of an OCC tree applied to a smart city, and the specific scheme is as follows:

[0034] Such as figure 1 As shown, the present invention provides a method for realizing a geometric view frustum of an OCC tree applied to a smart city, wherein the method comprises the following steps:

[0035] Step S1: Collect occluding objects and occluded objects.

[0036] Collect the blocking body and the blocked body, and perform distance correlation calculation to calculate the weight...

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PUM

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Abstract

The invention discloses a geometric figure view cone implementation method and device applied to an OCC tree of a smart city and a computer readable storage medium. The method comprises the following steps: collecting a shielding body and a shielded body; sorting the shielding bodies according to the weight; calculating the visibility of the shielding body and the shielded body; and traversing the sequenced shielding bodies and the shielded bodies, and storing visibility information by utilizing a data structure of 64-bit unsigned long long. According to the method, the shielding body and the shielded body are mapped to the screen space to generate the set of screen triangles, and the screen triangles are sorted according to the screen depth, so that the scanning range is expanded, the detection efficiency is improved, and the detection time is saved.

Description

technical field [0001] The present invention relates to the technical field of 3D rendering, in particular to a method, a device and a computer-readable storage medium for realizing a geometric view frustum of an OCC tree applied to a smart city. Background technique [0002] Occlusion Culling (OCC) refers to not rendering an object when it is occluded by other objects and is not within the visible range of the camera. When using occlusion culling, before the rendered object is sent to the rendering pipeline, the hidden surface or hidden object that will not be seen because of being occluded will be culled, thereby reducing the amount of rendering data per frame and improving rendering performance. , the performance improvement will be more obvious in densely occluded scenes. [0003] However, OCC is not an automatic process in 3D graphics calculations, because in most cases the object farthest from the camera is rendered first, and the object closer to the camera is render...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T15/10
CPCG06T15/40G06T17/05
Inventor 孙上刘敬杰祝瑞尹恺钟宸沈旭唐欣桐颜嘉旖白林于浩钱琛川彭林剑吴同
Owner BEIJING ZHIU TECH CO LTD
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