Only about 60% of the images were calibrated.
I’ve set frontal and lateral overlap of 80% and 70%, respectively in DJI RC.
I think this setting is enough, but why this problem was occurred.
I attached my Pix4D report, please check this issue.
Thank you.
M3M_20260401_report.pdf (1.3 MB)
For multispectral image acquisition in PIX4Dmapper, it is recommended to use high overlap settings to ensure accurate reconstruction and analysis. The suggested overlap values are:
At least 80% front overlap
At least 70% side overlap
For agricultural fields and areas with uniform surfaces (such as crops, snow, or sand), even higher overlap is advisable—ideally 85% frontal and 70% side overlap—to compensate for the lack of distinct visual features. These recommendations help ensure that all bands of the multispectral camera are properly aligned and that the resulting outputs (such as reflectance maps and indices) are accurate.
My suggestion is to increase the overlap in the area you are mapping to be able to make a comparison of the results you have obtained. greetings
The planned 80%/70% overlap may be sufficient, but it would be useful to check whether the captured set achieved that consistently. Do the uncalibrated images form clusters or gaps along particular flight lines, or are they scattered throughout the project?
I would also compare the calibrated and uncalibrated groups for blur, exposure changes, irregular capture spacing, missing sequence numbers, and unusual GPS or altitude metadata. If the failures cluster spatially, that may point more toward an acquisition or coverage issue than a processing-setting issue.
Were the images captured over vegetation, water, reflective surfaces, or another area with limited or changing texture?