Abstract: A method for adjusting a projection parameter and a projection system are disclosed. In the projection system, a processor is configured to drive multiple projectors to project multiple projection images respectively and obtain a full projection range through calculation, select a target area from at least one overlapping area included in the full projection range and obtain a target projection parameter value of the target area, obtain multiple intersection points of the overlapping area on a boundary of the full projection range, define connecting lines between a center point of the target area and the intersection points as dividing lines to divide the full projection range into multiple sub-areas, respectively adjust a projection parameter value of each of the sub-areas according to the target projection parameter value of the target area, and perform projection through the corresponding projector based on the adjusted projection parameter value of each of the sub-areas.

Abstract: A method for adjusting a projection boundary and a projection system are provided. Multiple imaging apparatuses corresponding to multiple projection apparatuses are driven, and each imaging apparatus obtains a corresponding captured image by capturing projected image projected by corresponding one projection apparatus and surrounding area of the projected image. All captured images are displayed on a display, and a main bounding box corresponding to each projected image and a reference bounding box corresponding to the surrounding area are displayed on each captured image. The main bounding box of each captured image is independently adjusted relative to the reference bounding box to obtain an adjusted main bounding box. A full image boundary is calculated based on the respective adjusted main bounding boxes. The projection apparatuses are driven to project an adjusted full image based on the full image boundary.

Abstract: An apparatus for separating springs includes a hollow casing, first and second tubes, and a plate. The casing defines an entrance hole allowing springs to enter, and an exit hole allowing springs to exit. The first tube has one end connected to a bottom of the casing, allowing gas to be introduced into the casing. The second tube has one end connected to a middle of the casing opposite to the hole, allowing gas to be introduced into the casing. The plate is fixed to the bottom of the casing for supporting the springs. The plate is ventilated, and is located above the end of the first tube.