Title:
画像処理装置および画像処理システム
Document Type and Number:
Japanese Patent JP3753954
Kind Code:
B2
Abstract:
To enable a brightness histogram operation without requiring a special-purpose integration circuit and memory. An image processing apparatus is provided with a gamma correction processing part. The gamma correction processing part 6 includes a LUT operation circuit 10 having a LUT memory 11 for gamma correction, a simplified gamma correction circuit 12 , selectors 14 and 15 , and a register 13 . When the gamma correction processing part 6 is used exclusively for gamma correction, the CPU 3 makes the register 13 hold aw control signal of L level to thereby cause the selectors 14 and 15 to select "0" terminals. The LUT memory 11 selects and outputs a gamma correction value (LUT conversion value) while referring to input pixel data as address data. On the other hand, when the gamma correction processing part 6 is used for brightness histogram operation, the CPU 3 makes the register 13 hold a control signal of H level to thereby cause the selectors 14 and 15 to select "1" terminals. The LUT memory 11 is used as a memory for storing an accumulation value of the brightness histogram operation.
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Inventors:
Hajime Sasaki
Application Number:
JP2001175679A
Publication Date:
March 08, 2006
Filing Date:
June 11, 2001
Export Citation:
Assignee:
Mega Chips Co., Ltd.
International Classes:
G06T1/20; G06T5/00; H04N5/202; G06T5/40; H04N1/407; H04N9/64; H04N5/20
Domestic Patent References:
| JP3239072A | ||||
| JP2000236473A |
Attorney, Agent or Firm:
Shigeaki Yoshida
Yoshitake Hidetoshi
Takahiro Arita
Yoshitake Hidetoshi
Takahiro Arita