Wavelet transform image signal compression method using human visual system (visual system)

摘要

An image compression method according to the present invention is disclosed.;A method of dividing an input video signal by using the wavelet transform according to the present invention and quantizing and subjecting the divided data to variable length coding and compressing the video signal is characterized in that the band pass frequency characteristic of the wavelet transform and the characteristic (MTF) using the spatial frequency characteristic and determining the quantization step size based on the reciprocal of the integral value.;As described above, according to the present invention, a wavelet-transformed signal is quantized using the quantization coefficient obtained by integrating the frequency response of the modulation transfer function of the human visual system, and the result is subjected to variable length coding, Effect.