Projector recommendation method and projector recommendation system

A projector recommendation system comprising:

• a database storing a look-up table, the look-up table recording a plurality of projectors and a plurality of projection parameters corresponding to each of the projectors;
• an input interface configured to input a size of a projection plane, a projection distance and an environmental brightness;
• a processing unit calculating a projection length according to the size of the projection plane, a target aspect ratio and a blending manner, calculating a target throw ratio according to the projection distance and the projection length, and calculating a target minimum projection brightness according to the environmental brightness, a predetermined brightness level and a projection area, the processing unit generating a projector recommendation result according to the target minimum projection brightness, the target throw ratio, a target resolution corresponding to the target aspect ratio and the projection parameters, wherein when the projection parameters of at least one candidate projector of the projectors satisfy the target minimum projection brightness, the target throw ratio and the target resolution, the processing unit generates a projector recommendation list to be the projector recommendation result, and the projector recommendation list shows the at least one candidate projector;
• and
• a display unit configured to display the projector recommendation list to show the at least one candidate projector for installing a projector satisfying a projection requirement at a site.