Three projection images were taken for each typical shoot by rotating the shoot’s main axis at an azimuth angle of 0° and zenith angles of 0°, 45°, and 90° [31]. Then, three projection area estimates, namely 𝐴𝑝(0°,0°)Ap(0°,0°), 𝐴𝑝(45°,0°)Ap(45°,0°)...