feat(dense): keep points with larger projected area
feat(dense): keep points with larger projected area

BrookRoberts/OpenSfM,BrookRoberts/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,sunbingfengPI/OpenSFM_Test,sunbingfengPI/OpenSFM_Test,mapillary/OpenSfM,mapillary/OpenSfM,oscarlorentzon/OpenSfM,oscarlorentzon/OpenSfM,BrookRoberts/OpenSfM,BrookRoberts/OpenSfM,BrookRoberts/OpenSfM,mapillary/OpenSfM,sunbingfengPI/OpenSFM_Test,oscarlorentzon/OpenSfM,mapillary/OpenSfM,sunbingfengPI/OpenSFM_Test,sunbingfengPI/OpenSFM_Test,oscarlorentzon/OpenSfM