Emulate Large Sensor Array of Handheld Digital Camera with Edge Preserved in Consistent Steps
Date Issued
2005
Date
2005
Author(s)
Shen, Yai-Nan
DOI
en-US
Abstract
Abstract
The digital cameras can be easily integrated with other handheld devices in one single chip. For hardware size and cost consideration, the camera sensor array of the PDAs or the cell phones is therefore limited. However, as the demanding of better image quality is increasing, the producer needs to employ large sensor array for higher image resolutions [3]. Therefore, how to emulate large sensor array to raise resolutions is a key problem to these devices. In this paper, we introduce a novel cost-effective interpolation method to enlarge the sensor array for higher resolution. Unlike traditional enlargement methods which operate only within a color plane, our method utilizes the relation between the distinct channel color differences of neighbors and the non-cross weight-based approach. Experimental results indicate the proposed method has the ability to emulate efficiently larger sensor array from the relation of color difference over local region and edge-sensing weight coefficients. This algorithm gives sharp edges over the enlarged image without color-bleeding artifacts. The experimental results demonstrate the effectiveness of the proposed method.
Subjects
內插還原
邊緣保留
影像放大
non-cross
demosaick
zoom
interpolation
Type
thesis