Image projection apparatus
An image projection apparatus includes 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; and a controller configured to generate the visible-light image. The controller varies 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.
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.
2. The image projection apparatus according to claim 1 , wherein the controller sets the colors of the pixels of the visible-light image so as to vary the colors in the stepwise manner from cold colors to warm colors according as the emission intensities become lower from a highest value.
3. The image projection apparatus according to claim 2 , wherein the controller sets the colors of the pixels of the visible-light image corresponding to a region having the highest emission intensity to blue or green.
4. The image projection apparatus according to claim 1 , wherein the controller sets the colors of the pixels corresponding to a region having the highest emission intensity to within a range from 120 degrees to 300 degrees in hue in HSV color space.
5. The image projection apparatus according to claim 1 , wherein the controller sets at least one of saturation and value of the pixels of the visible-light image in HSV color space in the stepwise manner depending on the emission intensity of the non-visible light at the positions corresponding to the pixels within the first region.
6. The image projection apparatus according to claim 1 , wherein the controller sets the color at a settable lowest step to white.