透過光場相機重建多維度資訊;Reconstruct a multi-dimensional information by the light field camera

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题名:	透過光場相機重建多維度資訊;Reconstruct a multi-dimensional information by the light field camera
作者:	潘昱竣;Pan, Yu-Jun
贡献者:	照明與顯示科技研究所
关键词:	光場相機;三維重建;偏振影像;light-field camera;3D reconstruction;polarization image
日期:	2021-12-03
上传时间:	2022-07-13 21:58:21 (UTC+8)
出版者:	國立中央大學
摘要:	科技技術日新月異，追求快速與方便，隨著工業製造的深入推進，在工業相機的應用上提出了更高層次的需求。普通工業相機，已經無法完全滿足工業應用要求。最常見的例子如有些玻璃以及塑膠檢測，在一般可見光影像上，是看不出任何刮傷與髒污，但在偏振光影像下，卻能清晰可見；亦或是藥錠劑和鋁包裝之間可能存在著反光與眩光等問題，一般檢測下會有錯誤判斷，但在偏振光下，因為偏光程度不同，因此也很容易辨別出藥錠劑是否被填充。由以上可知光的偏振提供了極其豐富的資訊。然而，現階段的設備系統，都有擁著系統目的的專一性，如工業偏振相機，只能拍攝偏振影像，如需有其他需求時，就必須架設另一套系統，無法在同一套系統中得到多的資訊。為了提高所取得的資訊，克服系統設備上的限制，本研究使用改良式光場相機(Light Field Camera)的光學系統架構，搭配線偏振片，在一張影像中，得到四張不同偏振角度的影像，計算待測物件的偏振影像和偏振角度，然而，也利用光場相機本身擁有的視差優點，在虛擬空間中重建物件，藉此在一套系統中，得到物件的偏振影像、偏振角度、三維重建，也可在三維重建上，套用偏振影像、偏振角度，達到多維度資訊呈現。 ;The science and technology are changing with each passing day. the pursuit of speed and convenience, with the in-depth advancement of industrial manufacturing, has put forward higher-level requirements in the application of industrial cameras. Ordinary industrial cameras can no longer fully meet the requirements of industrial applications. The most common example is the detection of some glass and plastics. On the general visible light image, no scratches and dirt can be seen, but under the polarized light image, it can be clearly seen; or it is a combination of medicine tablets and aluminum packaging. There may be problems such as reflection and glare. Generally, there will be wrong judgments under the test, but under polarized light, because the degree of polarization is different, it is easy to distinguish whether the lozenge is filled. It can be seen from4 the above that the polarization of light provides extremely rich information. However, the current equipment system has the specificity of the purpose of the system. For example, an industrial polarization camera can only shoot polarized images. If there are other requirements, another system must be set up. It cannot be in the same system. Get more information. In order to improve the information obtained and overcome the limitations of the system equipment, this research uses an improved light field camera (Light Field Camera) optical system architecture, with a linear polarizer, in an image, four different polarization angles are obtained. Image, calculate the polarization image and polarization angle of the object under test, however, it also uses the parallax advantages of the light field camera itself to reconstruct the object in the virtual space, thereby obtaining the polarization image, polarization angle, and polarization angle of the object in a system. Three-dimensional reconstruction can also apply polarized images and polarization angles to three-dimensional reconstruction to achieve multi-dimensional information presentation.
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