Simulation of multi-channel microlens array for image stitching

2018 ◽  
Author(s):  
Chien Chao ◽  
Guo-Dung Su
Keyword(s):  
Microlens Array ◽  
Image Stitching

Real Time Panoramic Video in OpenCV using Image Stitching Techniques

2018 ◽  
Vol 06 (03) ◽  
pp. 184-187
Author(s):  
K. Rajasri ◽  
D. Gayathri ◽  
Balasundari Ilanthirayan ◽  
A. Sundra
Keyword(s):  
Real Time ◽  
Image Stitching ◽  
Panoramic Video ◽  
Stitching Techniques

Image Stitching Algorithms - A Review

2016 ◽  
Vol 1 (2) ◽  
pp. 14-18
Author(s):  
Srishty Suman ◽  
Utkarsh Rastogi ◽  
Rajat Tiwari
Keyword(s):  
Video Compression ◽  
Video Summarization ◽  
Video Stabilization ◽  
Image Stitching

Image stitching is the process of combining two or more images of the same scene as a single larger image. Image stitching is needed in many applications like video stabilization, video summarization, video compression, panorama creation. The effectiveness of image stitching depends on the overlap removal, matching of the intensity of images, the techniques used for blending the image. In this paper, the various techniques devised earlier for the image stitching and their applications in the relative places has been reviewed.

scholarly journals Integrated Double-Sided Random Microlens Array Used for Laser Beam Homogenization

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 673
Author(s):  
Wei Yuan ◽  
Cheng Xu ◽  
Li Xue ◽  
Hui Pang ◽  
Axiu Cao ◽  
...  
Keyword(s):  
Laser Beam ◽  
Microlens Array ◽  
Energy Utilization ◽  
Utilization Rate ◽  
Periodic Lattice ◽  
Lattice Distribution ◽  
Speckle Field ◽  
High Laser ◽  
Alignment Problem ◽  
In Series

Double microlens arrays (MLAs) in series can be used to divide and superpose laser beam so as to achieve a homogenized spot. However, for laser beam homogenization with high coherence, the periodic lattice distribution in the homogenized spot will be generated due to the periodicity of the traditional MLA, which greatly reduces the uniformity of the homogenized spot. To solve this problem, a monolithic and highly integrated double-sided random microlens array (D-rMLA) is proposed for the purpose of achieving laser beam homogenization. The periodicity of the MLA is disturbed by the closely arranged microlens structures with random apertures. And the random speckle field is achieved to improve the uniformity of the homogenized spot by the superposition of the divided sub-beams. In addition, the double-sided exposure technique is proposed to prepare the rMLA on both sides of the same substrate with high precision alignment to form an integrated D-rMLA structure, which avoids the strict alignment problem in the installation process of traditional discrete MLAs. Then the laser beam homogenization experiments have been carried out by using the prepared D-rMLA structure. The laser beam homogenized spots of different wavelengths have been tested, including the wavelengths of 650 nm (R), 532 nm (G), and 405 nm (B). The experimental results show that the uniformity of the RGB homogenized spots is about 91%, 89%, and 90%. And the energy utilization rate is about 89%, 87%, 86%, respectively. Hence, the prepared structure has high laser beam homogenization ability and energy utilization rate, which is suitable for wide wavelength regime.

scholarly journals Research on surface quality difference of Microlens array fabricated by fast tool servo cutting

2021 ◽  
pp. 1-1
Author(s):  
Yuetian Huang ◽  
Shijie Li ◽  
Jin Zhang ◽  
Chen Yang ◽  
Yingxiu Kong ◽  
...  
Keyword(s):  
Surface Quality ◽  
Microlens Array ◽  
Fast Tool Servo ◽  
Quality Difference

Real-Time Panorama and Image Stitching with Surf-Sift Features

2021 ◽  
Author(s):  
Sheshang Degadwala ◽  
Utsho Chakraborty ◽  
Promise Kuri ◽  
Haimanti Biswas ◽  
Ahmed Nur Ali ◽  
...  
Keyword(s):  
Real Time ◽  
Image Stitching ◽  
Sift Features

Fabrication of refractive silicon microlens array with a large focal number and accurate lens profile

2019 ◽  
Vol 26 (4) ◽  
pp. 1159-1166
Author(s):  
Xiaojun Zhou ◽  
Aiguo Song ◽  
Shuai Wang ◽  
Mengjia Wang ◽  
Weixing Yu
Keyword(s):  
Microlens Array
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