Transparency of the orthomosaic


PIX4Dmapper generates two types of orthomosaics:

  • project_name_mosaic_group_name: Orthomosaic with the type and number of bands of the input images. To generate this orthomosaic, select GeoTIFF Without Transparency in the Processing Options. For more information about this option: Menu Process > Processing Options... > 3. DSM, Orthomosaic and Index > DSM and Orthomosaic.
  • project_name_transparent_mosaic_group_name (generated by default): Orthomosaic with one extra band (transparency band), which results in a transparent background of the orthomosaic. 
Example: For example, if the input images are TIFF of 6 bands/16 bit float, the project_name_mosaic_group_name will be of 6 bands/16 bit float and the project_name_transparent_mosaic_group_name of 7 bands/16 bit float.


The difference is the following:

project_name_mosaic_group_name gives a black color value to the no value data pixels. project_name_transparent_mosaic_group_name does not display color information (it applies a transparent band) to the no value data pixels.
geo.png alpha_2.png
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  • Julien Da Silva Martins


    Sorry in advance for my english mistakes.

    I don't understand, i already have orthomosaïc with a name like this : project_name_transparent_mosaic_group_name 

    However, when i insert my mosaic in Autocad, my worthless data pixels is black and not transparent as announced.

    Have you ever seen this problem ?

    Thank's for any answer.

    V. Navarra.

  • Avatar
    Beata (Pix4D)

    Hi Vincent, 

    If you doubt that the generated ortho has the transparency included you can double-check it in QGIS. However, I believe the issue requires readjustments of the settings in AutoCAD. Check this instruction; hopefully, it will fix it. 



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