An improved convolution kernel system and method may be used to improve performance of analysis of input image data for autonomous or semi-autonomous vehicle navigation. A processing circuit may be used to apply a convolution kernel on the input data to provide output data that comprises output data segments. The application may include repeating scanning and summing, including parallel scanning input data segments of the different input channels and of the input data depth value to provide first intermediate results associated with the input data depth value, and summing first intermediate results associated with a same output data channel and with different input depth values to provide, per each output data channel, a second result. The output analyzed image data may be used to generate a vehicle control signal, such as automatic control of braking, acceleration, or steering of a vehicle.