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Color 3D scanning | HDI 3D Scanners

Capturing textured 3D scan is possible with just colored machine vision cameras provided with HDI Advance 3D scanners. However if you need a much higher resolution scanning, a digital SLR camera (such as Canon, Nikon etc.) is recommended. This provides greater detail and brighter color compared to machine vision cameras. Below you will discover a bit more about this method of 3D scanning.


3D Scanner setup

In order to get the most out of using a digital camera, please follow the instructions below as seen in the image. Ensure that your SLR camera is placed just above "Cam 1". The DLSR does have to be perfectly lined up with Cam 1. Also, It is recommended that they share a common FOV (Field of View) In the following example, 2 machine vision cameras plus a SLR Canon camera are used:

HDI Advance 3d scanner

Attaching the digital camera to your scanner is quite easy. You can use a Micro Ball Head is used to mount the camera onto the scanner, carefully placing it as close to "Cam 1" as possible. You will notice in the image above that the facing direction of both Cam 1 and the digital camera are very similar. This is needed to properly overlay the texture onto the mesh.


calibration











When you attach the digital camera to your computer, the drivers should automatically install. Note: There is a known incompatibility between Canon camera drivers and Windows 7 "N" (no media) which is available in Europe. To resolve this, install Windows Media Player, which will also install drivers that Canon drivers are dependent on.


Calibration stage

Once the hardware has been properly set up, calibration can begin. There is not much of a difference in calibrating with a texture camera compared to Duo or Single scan mode. Check to see if the digital camera is in good focus just as you would check the machine vision cameras. Lighting plays a big role as well, so ensure that your digital camera is bright enough to pick up the calibration board patterns. The red square in the image below marks the section where you will choose to enable a texture camera, as well as choose which camera to use. We recommend that you turn on the flash when calibrating and scanning, so please use an A/C adapter that plugs the camera directly into an electrical socket. Switching batteries while calibrating or scanning will cause you to lose that calibration due to physically having to touch and remove the battery. Please view Camera Configuration to adjust your aperture, shutter speed, and other settings.



calibration stage

3D scanner color texture

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