Mapping Method of 2D Projection Image to 3D Model
A 3D model and 2D projection technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problem of lack of connection between 2D projection and 3D model, and achieve the effect of solving the problem of graphics scaling and 3D model scaling.
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[0046] This embodiment provides a mapping method from a two-dimensional projected image to a three-dimensional model, such as figure 1 shown, including the following steps:
[0047] Step 1, obtain a 3D model by a 3D scanner;
[0048] In this embodiment, a hand-held three-dimensional laser scanner Handyscan3D is used to scan objects to obtain three-dimensional model information;
[0049] Step 2, preprocessing the 3D model to obtain a preprocessed 3D model;
[0050] Denoise the acquired 3D model, as shown in Figure 2(a) and Figure 2(b).
[0051] Step 3, normalize the preprocessed 3D model to obtain the bounding box of the 3D model; image 3 shown.
[0052] Suppose the vertex set is V and the normal vector set is N
[0053] Step 31, obtain the centroid of the 3D model
[0054] The calculation of the centroid is through the statistics of the model vertex set, and the mean value of the vertices in the three directions is obtained as the centroid.
[0055] Step 32, realizatio...
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