1. An image sensing apparatus having an image sensing device, comprising: an attitude detection unit configured to detect an attitude of said image sensing apparatus; a plurality of filter processing circuits configured to read image signals obtained by said image sensing device in a direction different from each other, and to extract edge information from the read image signals; and a feature extraction circuit configured to select one of the plurality of filter processing circuits in accordance with the attitude detected by said attitude detection unit and to recognize the shape of an object in said image signals in accordance with the edge information extracted by the selected filter processing circuit.