Patent ID: 8736686

Claim:
A method for judging whether a lens and a sensing element of an image pickup device are parallel with each other, said method comprising steps of: (a) fixing an object, wherein said object has at least one mark; (b) placing a standard image pickup device at a shooting position, and shooting said object by said standard image pickup device to acquire a standard image frame, wherein said standard image pickup device comprises a standard lens and a standard sensing element, and said standard lens and said standard sensing element are parallel with each other; (c) acquiring at least one standard parameter of said at least one mark of said standard image frame; (d) placing a tested image pickup device at said shooting position, and shooting said object by said tested image pickup device to acquire a tested image frame, wherein said tested image pickup device comprises a tested lens and a tested sensing element; (e) acquiring at least one tested parameter of said at least one mark of said tested image frame; and (f) comparing said at least one standard parameter with said at least one tested parameter, thereby judging whether said tested lens and said testing sensing element of said tested image pickup device are parallel with each other.