A camera system apparatus that includes an image sensor unit and an AFE unit for digitizing an analog output signal output from the image sensor unit into an digital video signal. A front end camera DSP unit, including a camera signal data path for accepting the digital video signal, and a measure unit operably connected to the camera signal data path for measuring picture characteristics or extracting picture parameters. A DSP unit processes the picture characteristics measured by the measure unit as parameters for initial camera control, and a parameter register into which the parameters are set to control the camera signal data path. A back end processor unit to which a video signal output from the camera signal data path is input, the back end processor including a general application process unit for processing the video signal and a scene analyzer operably connected to the general application process unit for precise camera processing.