Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Multispectral imaging using a stereo camera: concept, design and assessment | Shrestha et al. EURASIP Journal on Advances in Signal Processing 2011 2011 57 http content 2011 1 57 o EURASIP Journal on Advances in Signal Processing a SpringerOpen Journal RESEARCH Open Access Multispectral imaging using a stereo camera concept design and assessment Raju Shrestha1 Alamin Mansouri2 and Jon Yngve Hardeberg1 Abstract This paper proposes a one-shot six-channel multispectral color image acquisition system using a stereo camera and a pair of optical filters. The two filters from the best pair selected from among readily available filters such that they modify the sensitivities of the two cameras in such a way that they produce optimal estimation of spectral reflectance and or color are placed in front of the two lenses of the stereo camera. The two images acquired from the stereo camera are then registered for pixel-to-pixel correspondence. The spectral reflectance and or color at each pixel on the scene are estimated from the corresponding camera outputs in the two images. Both simulations and experiments have shown that the proposed system performs well both spectrally and colorimetrically. Since it acquires the multispectral images in one shot the proposed system can solve the limitations of slow and complex acquisition process and costliness of the state of the art multispectral imaging systems leading to its possible uses in widespread applications. Introduction With the development and advancement of digital cameras acquisition and use of digital images have increased tremendously. Conventional image acquisition systems which capture images into three color channels usually red green and blue are by far the most commonly used imaging systems. However these suffer from several limitations these systems provide only color image suffer from metamerism and are limite d to visual range and the captured images are environment dependent. Spectral imaging addresses these problems. Spectral imaging systems capture image data at .
