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High Quality Raster Image Resizing Using Linear Weighted Manipulation

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Due to the versatile customer applications and especially for large size industrial printing needs, the conflict comes between the image enlargement and high resolution quality. The image resizing process introduces specific pixels to the original image, or leaves out specific pixels from the original image. In order to maintain image quality and non-distortion, the value of such pixels and their positions were carefully deliberated. Prior researches such as DCT-based [2], wavelets, pixel replication linear interpolation [1] [3] those were limited by bandwidth and storage spaces, therefore a high efficiency resizing method is proposed in this paper. We introduce a new simple and high quality image-resizing algorithm that using linear weighted method for enlarging and drawing out particular pixels for reducing image size. The enlarging is first procedure and following with reducing procedure, where the image boundaries between those procedures needed to be carefully identification by linear weighted to avoid resolution loss. The simulation suggested the image can be enlarged up to four times and reduced down to quarter of original image at no resolution deterioration, and save the storage space need of fifty percent. Besides, the separation procedure is independent on enlarging procedure that can be operated if the image only needs to be reduced, same performance as mentioned before. This algorithm had been implemented by hardware and it will easily operate in software function in near future.

Document Type: Research Article

Publication date: January 1, 2006

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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