Orientation

How to find position, scale and rotation of a known shape/contour in an image?
How do you find the orientation of an object? How do you find the orientation of an object?In two dimensions the orientation of any object (line, ve...
How to calculate roll and pitch from an accelerometer in whatever orientation?
How do you calculate accelerometers roll and pitch?How do you find the orientation of an accelerometer?Can an accelerometer measure orientation? How...