Method and device for projection parameter adjustment and projection apparatus

A device for projection parameter adjustment comprising:

• a display control circuit, configured to control a projector to display a plurality of predetermined patterns in accordance with a plurality of predetermined display conditions corresponding to the plurality of predetermined patterns, each of predetermined patterns corresponding to a projection parameter, and the projection parameter including one or more of a position where the projector is placed, an angle at which a lens of the projector is rotated about an axis of the lens and a position of the lens of the projector;
• a luminance acquisition circuit, configured to measure luminance of a plurality of predetermined positions in a theoretical display area of the projector in accordance with the predetermined measurement condition;
• a matching judgment circuit, configured to judge whether the predetermined patterns match with the theoretical display region in accordance with the luminance of the plurality of predetermined positions;
• a control circuit, configured to generate an adjustment signal for adjusting the projector under the condition a judgment result indicating a mismatch is received from the matching judgment circuit and generate an enabled signal for controlling operation of the luminance acquisition circuit after the adjustment signal is generated;
• and
• a drive circuit, configured to adjust operation of the projector in accordance with the adjustment signal output from the control circuit.

A projection apparatus comprising a device for projection parameter adjustment, wherein the device for projection parameter adjustment comprises:

• a display control circuit, configured to control a projector to display a plurality of predetermined patterns in accordance with a plurality of predetermined display conditions corresponding to the plurality of predetermined patterns, each of predetermined patterns corresponding to a projection parameter, and the projection parameter including one or more of a position where the projector is placed, an angle at which a lens of the projector is rotated about an axis of the lens and a position of the lens of the projector;
• a luminance acquisition circuit, configured to measure luminance of a plurality of predetermined positions in a theoretical display area of the projector in accordance with the predetermined measurement condition;
• a matching judgment circuit, configured to judge whether the predetermined patterns match with the theoretical display region in accordance with the luminance of the plurality of predetermined positions;
• a control circuit, configured to generate an adjustment signal for adjusting the projector under the condition a judgment result indicating a mismatch is received from the matching judgment circuit and generate an enabled signal for controlling operation of the luminance acquisition circuit after the adjustment signal is generated;
• and
• a drive circuit, configured to adjust operation of the projector in accordance with the adjustment signal output from the control circuit.