Digital image processing method for analog transmission network and camera apparatus and image processing apparatus and image processing system therefor

A digital image processing method for an analog transmission network, a camera apparatus, an image processing apparatus and an image processing system therefor are provided to receive and store HD(High Definition) image data such as HDTV(High Definition Television) image data in the camera apparatus by using an analog transmission network or reproduce the HD image data generated by the camera apparatus. A camera apparatus(100) includes a photographing unit(110) and a signal processing unit(120). The photographing unit photographs a subject and generates digital image data with first resolution. The signal processing unit divides each frame of the digital image data with the first resolution generated through the photographing unit into the same size of N regions, gives an order to the each region, interlaces each of the N regions according to the order of a corresponding region, reads the arbitrary numbered line of the each region successively, reads the corresponding lines of the each region n by n lines successively from the arbitrary numbered line, generates fields successively with the resolution of analog transmission network standards with the lines, converts into and processes N fields, and transmits the processed N fields through an analog transmission network.