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Full-Text Articles in Engineering
The Use Of Alignment Cells In Mmcc Barcode, Siong Khai Ong, Douglas Chai, Alexander Rassau
The Use Of Alignment Cells In Mmcc Barcode, Siong Khai Ong, Douglas Chai, Alexander Rassau
Research outputs pre 2011
The QR code, a monochrome 2D barcode, is a popular and commonly used barcode system worldwide. QR codes can easily be read using a mobile phone with the appropriate decoder. As there is an increasing need for higher data capacity barcodes, some newer 2D barcodes, such as the MMCC code, have adopted the use of colour. However, the use of colour introduces more challenges for mobile phone decoders than with monochrome codes. In this paper, the use of alignment cells within the MMCC code is proposed to improve the robustness of the colour barcode when used in a mobile environment. …
Multi-Wavelength Laser Scanning Architecture For Object Discrimination, Kavitha Venkataraayan, Sreten Askraba, Kamal Alameh, Clifton Smith
Multi-Wavelength Laser Scanning Architecture For Object Discrimination, Kavitha Venkataraayan, Sreten Askraba, Kamal Alameh, Clifton Smith
Research outputs pre 2011
A novel method for identifying and discriminating various objects using five different lasers is described. This method uses a laser combination module that allows five laser diodes of different wavelengths to sequentially emit identically polarized light beams through a common aperture, along one optical path. Each laser beam enters a custom-made curved optical cavity for multi-beam spot generation through internal partial beam reflection. The intensity of the reflected light beams from each spot is detected by a high-speed area scan image sensor. Object discrimination based on analyzing the Gaussian profile of reflected laser light at distinguishing wavelengths is demonstrated.
Adaptive Optical Splitter Employing An Opto-Vlsi Processor And A 4-F Imaging System, Haithem Ab Mustafa, Feng Xiao, Kamal Alameh
Adaptive Optical Splitter Employing An Opto-Vlsi Processor And A 4-F Imaging System, Haithem Ab Mustafa, Feng Xiao, Kamal Alameh
Research outputs pre 2011
A novel adaptive optical splitter structure employing an Opto-VLSI processor and 4-f imaging system is proposed and experimentally demonstrated. By driving the Opto-VLSI processor with computer generated multicasting phase holograms, an input optical signal launched into an input optical fiber port can be split and coupled into many output optical fiber ports with arbitrary splitting ratios. A proof-of-principle 1 2 adaptive optical splitter structure driven by optimized multicasting phase holograms uploaded onto the Opto-VLSI processor is developed, demonstrating an arbitrary splitting ratio over a wavelength range exceeding 50 nm.