The reflectance map is mainly used when the input is multispectral/thermal imagery.
For each band, Pix4Dmapper produces one reflectance map. The goal is to properly assess the reflectance for a particular feature based on the pixel value in the images. This pixel value is influenced by many factors, including but not limited to:
- Incoming light
- Shutter speed
- Sensor response and optical system
Pix4Dmapper therefore uses the camera positions and the 3D model to take these different factors into account and produce an accurate reflectance map. To obtain representative results, it is important to have the right equipment. For Pix4D's recommendations concerning camera requirements: 204894705.