New Features in Meshroom 2023.1
- Image Masking -> https://github.com/alicevision/Meshroom/discussions/1993
- Color Checker
One of the new (Beta) nodes in Meshroom allow for Color Checker detection and correction. This is really useful when working with RAW images in photogrammetry and panorama pipelines. (Note this is a beta feature and some functionality is not yet implemented)
Here is a pipeline for photogrammetry: A: CameraInit->ColorCheckerDetection->ColorCheckerCorrection->PrepareDenseScene B: once the ColorCheckerDetection node is computed successfully, the detected Checker can be enabled in the viewer C: there will be a red bar around the detected checker D: and a visual reference will be added to the view, so you can compare the colors E: by moving over the image, the rgb values will be shown in the upper right corner
ColorCheckerDetection: (BETA)
Performs Macbeth color checker chart detection.
Outputs:
the detected color charts position and colors
the associated tranform matrix from "theoric" to "measured"
assuming that the "theoric" Macbeth chart corners coordinates are:
(0, 0), (1675, 0), (1675, 1125), (0, 1125)
Dev notes:
Fisheye/pinhole is not handled
ColorCheckerViewer is unstable with multiple color chart within a same image
ColorCheckerCorrection: (BETA)
Performs color calibration from Macbeth color checker chart.
The node assumes all the images to process are sharing the same colorimetric properties.
All the input images will get the same correction.
If multiple color charts are submitted, only the first one will be taken in account.