Stitching artifacts - PIX4Dreact

This article discusses the causes of artifacts in orthomosaics .

Graphic card drivers issue

This is a common problem. The artifacts look really strange. Many colors are present, and it's a combination of big and small squares, images are scrambled, looking like a Picasso painting. 

Example artifacts: 

   

This is commonly related to outdated graphic card drivers.To solve this: 

• The drivers of the graphic card should be updated. This article can be handy: Update graphic card drivers. 

• After updating drivers and restarting the device, process the imagery again.

• If the problem persists, import the imagery again and disable GPU acceleration - Processing options.

Color balance 

Different colors between images can generate "Honey comb" effect:

To solve this issue and improving the color transitions in the orthomosaic:

• Import the images again.
• Enable Full Blending under Advanced settings - Processing options.

Insuficcient overlap

When overlap is insuficcient, processing may fail or artifacts can occur in the orthomosaic.

Make sure overlap is more than 70% for both side and frontal overlap. 

Corrupted images

Non-nadir or distorted images can generate artifacts. 

To solve this issue, inspect the images around the area and discard them when processing.