- Weighted Hadamard변환을 이용한 Image Data 처리에 관한 연구
- ㆍ 저자명
- 이문호
- ㆍ 간행물명
- 技術士
- ㆍ 권/호정보
- 1983년|16권 4호|pp.15-19 (5 pages)
- ㆍ 발행정보
- 한국기술사회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Therefore the use of Hadamard transform in the image processing requires only the real number operations and results in the computational advantages. Recently, however, certain degradation aspects have been reported. In this paper we propose a WH matrixtwhich retains the main properties of Hadamard matrix. The actual improvement of the image transmission in the inner part of the picture has been demonstrated by the computer simulated image developments. The orthogonal transforms such as Hadamard transform offers a useful facility in the digital signal processing. As the size of the transmission block increases, however, the assignment of bits for each data must increase exponentially. Thus the SNR of the image tends to decline accordingly. As an attempt to increase the SNR, we propose the WH matrix whose elements are made of ${pm}$1, ${pm}$2, ${pm}$3, ${pm}$4, and the unitform is 8${ imes}$8 matrix.