Multi-exposure HDR capture

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3D scan

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The box to the right has a white and diffuse surface, the camera to the left has a black and glossy surface, while the box in the middle is somewhere between. Lastly, the cylinder in the bottom has a shiny and reflective surface.

Signal-to-Noise Ratio (SNR)

The SNR map in Zivid Studio shows the signal-to-noise ratio of each pixel in the image. You can read more about SNR in SNR Value, but the essence is that the higher (绿色) the SNR, the better the quality of the point cloud. 黄色表示low SNR value。

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Enable both acquisitions in Zivid Studio to do a High Dynamic Range (HDR) capture. This will combine the two acquisitions to get the best of both, and expose well for both highlights and lowlights.

Combining multiple bracketed exposures into a HDR image

Different methods:

  1. If images Ik, and their exposure time tk, are known, we need to estimate the camera response function, …
  2. tone mapping
  3. …