A calibration-and-error correction method for improved texel (fused ladar/digital camera) images

Scott E. Budge

doi:10.1117/12.919411

14 May 2012 A calibration-and-error correction method for improved texel (fused ladar/digital camera) images

Scott E. Budge

Proceedings Volume 8379, Laser Radar Technology and Applications XVII; 83790S (2012) https://doi.org/10.1117/12.919411
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

The fusion of imaging ladar information and digital imagery results in 2.5-D surfaces covered with texture information. Called "texel images," these datasets, when taken from dierent viewpoints, can be combined to create 3-D images of buildings, vehicles, or other objects. These 3-D images can then be further processed for automatic target recognition, or viewed in a 3-D viewer for tactical planning purposes. This paper presents a procedure for calibration, error correction, and fusing of ladar and digital camera information from a single hand-held sensor to create accurate texel images. A brief description of a prototype sensor is given, along with calibration technique used with the sensor, which is applicable to other imaging ladar/digital image sensor systems. The method combines systematic error correction of the ladar data, correction for lens distortion of the digital camera image, and fusion of the ladar to the camera data in a single process. The result is a texel image acquired directly from the sensor. Examples of the resulting images, with improvements from the proposed algorithm, are presented.

Citation Download Citation

Scott E. Budge "A calibration-and-error correction method for improved texel (fused ladar/digital camera) images", Proc. SPIE 8379, Laser Radar Technology and Applications XVII, 83790S (14 May 2012); https://doi.org/10.1117/12.919411

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