Projection image keystone correction method and system and related equipment

• Main Authors: LI ZHENGFENG, ZHENG JIANZHANG
• Format: Patent
• Language: Chinese; English
• Published: 11.08.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a keystone correction method and system for a projection image and related equipment.The keystone correction method for the projection image is applied to projection equipment, the projection equipment is provided with a distance sensor, and the keystone correction method for the projection image comprises the following steps that the distances from the projection equipment to at least three different distance points of a projection plane are obtained; according to the distances from the projection equipment to the at least three distance points, a rotation angle generated by a projection image of the projection equipment relative to a plane perpendicular to the projection plane is calculated according to a preset calculation mode; and carrying out image conversion processing on the projection image according to the rotation angle so as to realize keystone correction of the projection image. According to the keystone correction method for the projection image, the cost of projection eq