Sampling (3D)
Pixel（像素）
The Settings::Sampling::Pixel parameter is used to choose the light color of the projected patterns and sampled pixels.
Depending on camera model the setting will have different options.
Zivid 2/2+ |
Zivid 2+ R |
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✓ |
✓ |
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✓ |
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✓ |
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✓ |
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✓ |
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✓ |
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✓ |
相机的分辨率如下所示：
3D 捕获 |
Zivid 2+ |
Zivid 2 |
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全分辨率 [1] |
2448×2048 |
1944×1200 |
2x2 [1] |
1224×1024 |
972×600 |
4x4 [1] |
612×512 |
不支持 |
When set to all, all pixels sampled, the point cloud has full resolution.
The following illustration shows the sensor grid and associated indices.
When we sub-/downsample (2x2) we get 1/4 of the original number of points.
This means that, after subsampling or downsampling 2x2, the number of points along x and y axis is divided by 2. For subsample or downsample 4x4 the number of points along x and y axis is divided by 4.
For example, for Zivid 2+ M130 the spatial distance between two pixels is 0.32 mm @ 1300 mm working distance. With 2x2 subsampling, this distance is doubled to 0.64 mm at the same working distance.
This does not affect the resolution in depth; the point precision determines this.
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Point cloud is full resolution when |
Point cloud has smaller resolution when |
Subsampling decreases the acquisition and capture time, as less data will be captured and processed. Additionally, it eliminates the need to downsample the data to transform it to a more manageable size and thus reduces the storage and post-processing requirements. With a quarter of the data, Zivid post-processing (such as 法线 and 转换) and user post-processing (e.g., CAD matching) become faster.
Picking a specific color channel can also help reduce noise and effects of ambient light. Projecting blue light will in most cases give better data than red light. On 2+ MR60/MR130/LR110, we always prefer to project blue light.
版本历史
SDK |
变更 |
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2.14.0 |
Added support for 2+ MR60/MR130/LR110 with the |
2.11.0 |
添加了对 |