画像処理装置、画像処理方法及び画像処理プログラム

Title:

画像処理装置、画像処理方法及び画像処理プログラム

Document Type and Number:

Japanese Patent JP6816137

Kind Code:

B2

Abstract:

An image processing device includes a processor configured to: extract pixel blocks; detect pixels having a maximum value and a minimum value in each of the pixel blocks; calculate reference value candidates from the maximum and the minimum values; calculate an absolute difference value relative to each of the maximum value, the minimum value, and the reference value candidates; divide each of the pixel blocks into subblocks; select, as a reference value from among the reference value candidates in each of the subblocks, a reference value candidate close to the pixel values in which the pixels included in each of the subblocks are distributed; extract a closest difference value, the minimum value, and the reference value; quantize each of the closest difference values into a quantization value by using the difference value that is the largest from among the closest difference values; and code the quantization value.

Inventors:

Eiji Furukawa
Junichi Tashiro

Application Number:

JP2018523086A

Publication Date:

January 20, 2021

Filing Date:

June 14, 2016

Export Citation:

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