PHYSA PhotoSynths

On May 5, 2014, the Philippines Hurricane Yolanda Structural Analysis (PHYSA) field team of eight civil engineers began a week-long, post-disaster damage assessment of the impacted regions on Leyte and Samar islands. Below you will find a series of Photosynths generated by Weichang Pang, Ph.D., P.E., M.ASCE.

Microsoft Photosynth is a software application that uses a series of digital images to generate a three-dimensional model and point cloud of the object of focus. The software uses interest point detection to identify features in common with other images. Then the software conducts bundle adjustment, a common technique of photogrammetry, to identify the location and orientation of each feature. Lastly, the software renders the display and navigation through the point cloud as a camera traverse. Animation is available in four basic paths: Panorama, Spin, Walk, and Wall.

 

Roof Top Failure, synth of building Palo-007-D1, 16 photos, generated by Weichiang Pang, Ph.D., P.E., M.ASCE

roof top failure by wpang602 on photosynth

 

Roof Top Failure, Salvacion, Palo, Philippines, 20 photos, synth of building Palo-007-D1 generated by Weichiang Pang, Ph.D., P.E., M.ASCE

roof top failure, salvacion, palo, philippines by wpang602 on photosynth

 

Tacloban Convention Center, Philippines, 93 photos, synth generated by Weichiang Pang, Ph.D., P.E., M.ASCE

tacloban convention center by wpang602 on photosynth

 

Philippines Damaged RC House, 59 photos, synth generated by Weichiang Pang, Ph.D., P.E., M.ASCE

philippines damaged rc house by wpang602 on photosynth