Method and apparatus for encoding/decoding image, computer-readable program therefore, and information recording medium storing same program
AssigneeRicoh Company, Ltd.
InventorJunichi Hara
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AssigneeRicoh Company, Ltd.
InventorJunichi Hara
Estimating the term…
An image encoding apparatus reduces the discontinuation or elimination of thin lines during a transform process including rounding of coefficient data generated by a frequency transform, thereby enabling the ready acquisition of a high-quality reduced image. The image encoding apparatus includes a frequency transform unit configured to frequency-transform an image to generate coefficient data having a low-frequency component and a high-frequency component; a dynamic range control unit configured to add a bit on a least significant bit end of a portion of pixel data of the image that is used for generating the coefficient data of the low-frequency component on a pixel by pixel basis, thereby increasing a dynamic range of the pixel data; and an encoding unit configured to encode the coefficient data generated by the frequency transform unit.
An image encoding apparatus comprising:
An image encoding method comprising:
A non-transitory computer-readable recording medium storing a computer-readable program which, when executed by one or more processors of an information processing apparatus, carries out an image encoding method which comprises:
Dependencies are inferred from the claim text.