Design of real-time image enhancement preprocessor for CMOS image sensor

Yun Ho Jung, Jae Seok Kim, Bong Soo Hur, Moon Gi Kang

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


This paper presents a design of the real-time digital image enhancement preprocessor for CMOS image sensor. CMOS image sensor offers various advantages while it provides lower-quality images than CCD does. In order to compensate for the physical limitation of CMOS sensor, the spatially adaptive contrast enhancement algorithm was incorporated into the preprocessor with color interpolation, gamma correction, and automatic exposure control. The efficient hardware architecture for the preprocessor is proposed and was simulated in VHDL. It is composed of about 19K logic gates, which is suitable for low-cost one-chip PC camera. The test system was implemented on FPGA chip on real-time mode, and performed successfully.

Original languageEnglish
Pages (from-to)68-75
Number of pages8
JournalIEEE Transactions on Consumer Electronics
Issue number1
Publication statusPublished - 2000 Feb

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Electrical and Electronic Engineering


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