US 12,075,198 B2
Image projection apparatus
Masahiro Takada, Kyoto (JP); Etsuro Hatano, Kyoto (JP); Takashi Nitta, Kyoto (JP); Satoru Seo, Kyoto (JP); and Takashi Suzuki, Osaka (JP)
Assigned to PANASONIC HOLDINGS CORPORATION, Osaka (JP)
Filed by PANASONIC CORPORATION, Osaka (JP)
Filed on Oct. 1, 2020, as Appl. No. 17/060,469.
Application 17/060,469 is a continuation of application No. PCT/JP2019/012131, filed on Mar. 22, 2019.
Claims priority of application No. 2018-072647 (JP), filed on Apr. 4, 2018.
Prior Publication US 2021/0021793 A1, Jan. 21, 2021
Int. Cl. H04N 9/31 (2006.01); A61B 5/00 (2006.01); A61B 90/00 (2016.01)
CPC H04N 9/3182 (2013.01) [A61B 5/0071 (2013.01); A61B 90/36 (2016.02); A61B 2090/366 (2016.02); A61B 2090/3933 (2016.02); A61B 2090/397 (2016.02)] 6 Claims
OG exemplary drawing
 
1. An image projection apparatus comprising:
a detector that detects a first region emitting non-visible light;
a projector that projects a visible-light image onto a second region including the first region detected by the detector;
an operating part for an operator performing various settings; and
a controller configured to generate the visible-light image so as to vary colors of pixels of the visible-light image in a stepwise manner depending on emission intensities of the non-visible light at positions corresponding to the pixels within the first region, wherein:
the controller is configured to control the projector according to an action mode including a plurality of projection modes switchable in accordance with an operation on the operating part,
the plurality of projection modes includes at least one of a first projection mode and a second projection mode, and a third projection mode,
the first projection mode is a mode in which saturations of the pixels of the visible-light image are varied continuously depending on the emission intensities of the non-visible light at the positions corresponding to the pixels within the first region,
the second projection mode is a mode in which saturations of the pixels of the visible-light image are varied in a stepwise manner depending on the emission intensities of the non-visible light at the positions corresponding to the pixels within the first region, and
the third projection mode is a mode in which hues of the pixels of the visible-light image are varied depending on the emission intensities of the non-visible light at the positions corresponding to the pixel within the first region.