Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Bryan Chou"'
Autor:
Chiman Kwan, Bryan Chou
Publikováno v:
Journal of Imaging, Vol 5, Iss 8, p 68 (2019)
The RGBW color filter arrays (CFA), also known as CFA2.0, contains R, G, B, and white (W) pixels. It is a 4 × 4 pattern that has 8 white pixels, 4 green pixels, 2 red pixels, and 2 blue pixels. The pattern repeats itself over the whole image. In an
Externí odkaz:
https://doaj.org/article/2c2c6a090f754da6a0f38cad07b39c3e
Autor:
Chiman Kwan, Bryan Chou, Jonathan Yang, Akshay Rangamani, Trac Tran, Jack Zhang, Ralph Etienne-Cummings
Publikováno v:
Sensors, Vol 19, Iss 17, p 3702 (2019)
Compressive sensing has seen many applications in recent years. One type of compressive sensing device is the Pixel-wise Code Exposure (PCE) camera, which has low power consumption and individual control of pixel exposure time. In order to use PCE ca
Externí odkaz:
https://doaj.org/article/dbd80791a4424d91bd84da1ed22b2bf4
Publikováno v:
Computers, Vol 8, Iss 2, p 32 (2019)
Since lossless compression can only achieve two to four times data compression, it may not be efficient to deploy lossless compression in bandwidth constrained applications. Instead, it would be more economical to adopt perceptually lossless compress
Externí odkaz:
https://doaj.org/article/dc6a4382bf2d4869a19de83ff1af512f
Autor:
Chiman Kwan, Xiaolin Zhu, Feng Gao, Bryan Chou, Daniel Perez, Jiang Li, Yuzhong Shen, Krzysztof Koperski, Giovanni Marchisio
Publikováno v:
Sensors, Vol 18, Iss 4, p 1051 (2018)
Although Worldview-2 (WV) images (non-pansharpened) have 2-m resolution, the re-visit times for the same areas may be seven days or more. In contrast, Planet images are collected using small satellites that can cover the whole Earth almost daily. How
Externí odkaz:
https://doaj.org/article/dd483be15ec24373ae2978a21dfe68e8
Publikováno v:
Signal & Image Processing : An International Journal. 10:9-29
This paper proposes a method based on Multitexton Histogram (MTH) descriptor to identify patterns inimages of human parasite eggs of the following species: Ascaris, Uncinarias, Trichuris, Hymenolepis Nana, Dyphillobothrium-Pacificum, Taenia-Solium, F
Autor:
Daniel Perez, Bryan Chou, Yuzhong Shen, Jiang Li, Leif Hagen, Chiman Kwan, Krzysztof Koperski
Publikováno v:
Signal, Image and Video Processing. 14:125-133
Many conventional cloud- and shadow-detection algorithms require meta-data such as sun angle and date of image collection. Moreover, detection results can vary a lot in actual images. We present simple and effective algorithms that do not require met
Autor:
Trac D. Tran, Chiman Kwan, Jonathan Yang, Jack Zhang, Bryan Chou, Ralph Etienne-Cummings, Akshay Rangamani
Publikováno v:
Signal, Image and Video Processing. 13:1629-1637
The pixel-wise code exposure (PCE) camera is a compressive sensing camera that has several advantages, such as low power consumption and high compression ratio. Moreover, one notable advantage is the capability to control individual pixel exposure ti
Publikováno v:
Signal & Image Processing : An International Journal. 10:01-14
The two mast cameras (Mastcam) onboard the Mars rover, Curiosity, are multispectral imagers with nine bands in each camera. Currently, the images are compressed losslessly using JPEG, which can achieve only two to three times compression. We present
Autor:
Jonathan Yang, Akshay Rangamani, Jack Zhang, Chiman Kwan, Bryan Chou, Trac D. Tran, Ralph Etienne-Cummings
Publikováno v:
Journal of Signal and Information Processing. 10:73-95
Pixel-wise Code Exposure (PCE) camera is one type of compressive sensing camera that has low power consumption and high compression ratio. Moreover, a PCE camera can control individual pixel exposure time that can enable high dynamic range. Conventio
Publikováno v:
Journal of Signal and Information Processing. 10:167-199
Although compressive measurements save data storage and bandwidth usage, they are difficult to be used directly for target tracking and classification without pixel reconstruction. This is because the Gaussian random matrix destroys the target locati