Three-dimensional modeling method based on plane image

A 3D modeling and image technology, applied in 3D modeling, image enhancement, image analysis, etc., can solve problems such as unfavorable promotion, operation, and unsuitability for mobile devices, and achieve the effect of simple 3D modeling

Inactive Publication Date: 2018-04-13
ZHEJIANG UNIV OF TECH
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Problems solved by technology

Operating the system requires a certain understanding of the software and a certain software foundation, and it is not suitable for people without professional training to operate
[0004] 2. When modeling, a lot of details and precise information are required, which is not conducive to the fuzzy conceptual design in the early stage
[0005] 3. During the modeling process, users need to frequently select and switch among

Method used

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  • Three-dimensional modeling method based on plane image
  • Three-dimensional modeling method based on plane image
  • Three-dimensional modeling method based on plane image

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Embodiment Construction

[0024] With reference to the accompanying drawings, an image-based three-dimensional modeling method adopts the following steps:

[0025] Step 1: Grayscale the input color image. Scan each pixel of the image to obtain the RGB value corresponding to each point; convert its RGB value into a gray value in a weighted summation, use the OpenCV cross-platform computer vision library written in C++ language, according to each point The RGB value is used to obtain the corresponding gray value, and the RGB value of the point is replaced by the obtained gray value.

[0026] If the grayscale value is between 0-9, take the grayscale value as 0; if the grayscale value is between 10-25, take the grayscale value as 15; if the grayscale value is between 26-43, take the grayscale value as 34 ;If the grayscale value is between 44-60, take the grayscale value as 52; if the grayscale value is between 61-79, take the grayscale value as 67; if the grayscale value is between 80-97, take the graysca...

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Abstract

A 3D modeling method based on a planar image. Edge detection is performed on the grayscaled planar image to obtain the edge of the image; the expansion algorithm is used at the edge to remove the transition color between adjacent colors in the image; the bitmap is decomposed Form a grayscale matrix, obtain the outer contour of the matrix and segment it, each gray value corresponds to a height, raise the segment point to the height corresponding to its gray value, and use three adjacent segment points to form a triangular patch , use the normal vector obtained from the triangular surface to determine the inner and outer surfaces, and finally obtain the three-dimensional model diagram. The invention realizes simple three-dimensional modeling by acquiring the gray value in the image, and each gray value corresponds to a height value, and is especially suitable for three-dimensional experiments in children's teaching, so that children can realize three-dimensional space models through simple color drawing of drawing.

Description

technical field [0001] The invention relates to a 3D modeling method for computer graphics, in particular to a method for performing three-dimensional modeling based on plane images. Background technique [0002] 3D modeling systems are one of the most valuable applications in the field of computer graphics. After a long period of development, its functions have been very rich and powerful, and it has been widely used in many fields. However, the development of shape modeling methods in the field of graphics is relatively backward. The currently dominant 3D modeling systems include 3DMAX, SoftImage, Maya, UG and AutoCAD, etc., which adopt the WIMP modeling method, which means: windows, icons, menus and pointers. However, this traditional modeling method still has many shortcomings, such as: [0003] 1. Strong professionalism. Operating the system requires a certain understanding of the software and a certain software foundation, and it is not suitable for people without p...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T7/13G06T5/30G06T5/00
CPCG06T17/00G06T5/002G06T5/30G06T7/13
Inventor 王忠飞陈元正张朋涛
Owner ZHEJIANG UNIV OF TECH
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