When using CupixWorks for spatial measurements and BIM overlay, please be aware of the following accuracy parameters:

Mapping Accuracy

For projects with BIM models, our 360° panoramic images are typically mapped with positional accuracy within 2 inches (5 cm) at 70% probability and within 6 inches (15 cm) at 99% probability under standard conditions. In most cases, the maximum positional deviation does not exceed 12 inches (30 cm).

For projects without BIM models, mapping accuracy may be reduced depending on site conditions and available reference information. In such cases, positional deviations can be as high as 1 meter (3.3 ft). On the other hand, processing is typically completed more quickly.

Mapping accuracy is continuously improving through ongoing algorithm enhancements and is expected to improve further over time.

Factors that may negatively impact mapping accuracy include:

• Large white, uniform, or reflective surfaces (e.g., white walls, mirrors, glass, and polished finishes) 
• Narrow or confined spaces 
• Textureless environments with limited visual features 
• Fast camera motion during capture Poor lighting conditions 
• Moving light sources or dynamic scene changes 
• Limited overlap between capture locations

BIM Overlay Visualization

When viewing BIM elements overlaid on panoramic images, apparent misalignments may occur due to:

• Panoramic image mapping accuracy
• Actual installation deviations
• Visual distortion inherent in equirectangular projections of 360° imagery

Measurement Accuracy

• Wall-to-wall measurements are typically accurate within 1-2% of actual dimensions.
• The smaller the object being measured, the more likely that a measurement will have notable errors.
• Reflective surfaces like mirrors, glass, or shiny floors frequently might not represent accurate 3D point clouds, potentially resulting in measurement deviations or inability to make measurements.

Factors affecting measurement precision include:

• Mapping accuracy of panoramic images at measurement points
• 3D point cloud coverage
• User point selection precision
• Panoramic image distortion

This accuracy information represents typical performance under standard conditions. Actual results may vary based on capture quality, reference plan accuracy, and measurement methodology.