Camera internal matrix

Could you tell me how to calculate internal matrix of depth camera in House3D?

The camera matrix was computed here:

Lines 63 to 69 in 1c09ee7

    
           glm::mat4 getCameraMatrix(const Geometry& geo) const { 
        
             glm::mat4 projection = glm::perspective( 
        
                 glm::radians(vertical_fov), 
        
                 (float)geo.w / geo.h, near, far); 
        
             glm::mat4 view = getView(); 
        
             return projection * view; 
        
           }

The values of vertical_fov, near, far are written in the file.

It does not explicitly compute an intrinsic matrix, but use a different form (the OpenGL "projection matrix", i.e. the glm::perspective function). You can check some online resources on about this function, e.g.: http://kgeorge.github.io/2014/03/08/calculating-opengl-perspective-matrix-from-opencv-intrinsic-matrix

Thanks for your help. The answer solve my problem. ^_^

	glm::mat4 getCameraMatrix(const Geometry& geo) const {
	glm::mat4 projection = glm::perspective(
	glm::radians(vertical_fov),
	(float)geo.w / geo.h, near, far);
	glm::mat4 view = getView();
	return projection * view;
	}