亞洲知識產權資訊網為知識產權業界提供一個一站式網上交易平台,協助業界發掘知識產權貿易商機,並與環球知識產權業界建立聯繫。無論你是知識產權擁有者正在出售您的知識產權,或是製造商需要購買技術以提高操作效能,又或是知識產權配套服務供應商,你將會從本網站發掘到有用的知識產權貿易資訊。

Direct shape recovery from photometric stereo with shadows (Technion)

總結
As imaging devices move closer to the objects under observation, it becomes increasingly difficult to reconstruct their entire three-dimensional shape. A limited number of current endoscopes and microscopes can address this problem and most of them are based on stereo vision reconstruction or complexly structured light setups. Stereo vision systems are expensive and highly specialized. In addition, two-view stereos are intrinsically problematic due to the often insufficient textural information obtained by two images to accurately reconstruct the surface. While active illumination systems can generate their own texture, they often require complicated and potentially expensive additional equipment.Our new endoscopic imaging system is based on a single view imaging system using 3 or more simple directional light sources. This simple setup is combined with a new and computationally efficient theoretical model understanding the shape of the object from the captured shaded images taken throughout a sequence of different illumination directions of the simple directional light sources. According to the change in shading of the object with respect to a single camera, shape reconstruction can be performed efficiently. We take advantage of this framework and simplify the process of reconstruction in endoscopic situations by augmenting the imaging device with nearby light sources in calibrated positions and directions. The light sources can be as simple as LED's or SMD lights which are easily modeled by our new theoretical framework.
技術優勢
• Reduces the technological and computational complexity required and involves a potentially low-cost physical augmentation.
• Improves existing technologies that already produce 3D reconstructions by augmenting the output results with more accurate details.
技術應用
• Reduced cost 3D endoscopy for virtual endoscopy registered to live targets through CT imaging
• Close field imaging such as fingerprint analysis, surface modeling, texture modeling
• Low power, low complexity augmentation of existing in-vivo systems
ID號碼
MAE-1513
國家/地區
以色列

欲了解更多信息,請點擊 這裡
移動設備