Browsing by Author "Lin Fang-Cheng"

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METHOD FOR IMAGE ENHANCEMENT, IMAGE PROCESSING APPARATUS AND COMPUTER READABLE MEDIUM USING THE SAME
(2015-12-03)
Peng Kuo-Shiuan
;
Lin Fang-Cheng
;
Huang Yi-Pai
;
Shieh Han-Ping D.
A method, image processing apparatus, and computer readable medium for image enhancement are provided. In the method, a low-resolution image is received and upscaled to generate an upscaled image having first pixels. Edge detection is performed on the upscaled image to obtain edge information of the first pixels. Each piece of the edge information includes an edge direction and an edge intensity, and each of the edge directions includes a horizontal and vertical component having a constant summation. A non-edge region of the upscaled image is enhanced to generate a high-resolution detail image; based on unsharp masking sharpening methods, an edge region of the low-passed upscaled image is enhanced according to the horizontal and vertical components of the edge directions to generate a high-resolution edge image. Image fusion is performed on the high-resolution edge image and the high-resolution detail image according to the edge intensities to generate a super-resolution image.
STIMULI GENERATING METHODS, DEVICES AND CONTROL SYSTEMS TO INDUCE VISUAL EVOKED POTENTIALS USING IMPERCEPTIBLE FLICKERING MULTI-COLOR LIGHTS
(2014-02-27)
Zao John Kar-Kin
;
Huang Yi-Pai
;
Jung Tzyy-Ping
;
Lin Fang-Cheng
Visual or photic stimuli generating methods, devices and control systems for inducing steady-state visual evoked potential (SSVEP) from human viewers without causing discomfort to the viewers or distorting the embedding images are disclosed. The control system includes a stimuli-generating device and an electroencephalography (EEG) sensing device. The stimuli-generating device includes a first and a second light source. The first light source generates a flickering light with a first wavelength while a second light source generates another flickering light with one or more wavelength(s) differ from that of the first one. Together, the light sources generate visual/photic stimuli flickering above their critical flicker fusion threshold while maintaining the colorfulness and hue of the embedding images. At least one electrode of the EEG sensing device is connected to each viewer, configured to receive and analyze his/her EEG signals in order to detect and determine his/her responses to the stimuli.
次世代即時超高解析倍頻顯示技術
(2014)
林芳正
;
Lin Fang-Cheng
;
國立交通大學光電工程學系（所）