Video projection control apparatus, video projection control method, program, and video projection apparatus

A video projection control method performed by a video projection control apparatus that projects video, comprising:

• calculating projection signal data to project video for projection using, as a light source, a laser beam output from a laser light source, from video signal data of input video, the laser light source having a property that a wavelength shifts in accordance with an emission intensity employed when the laser beam is emitted;
• applying, to the projection signal data, a correction process of shifting the wavelength of the laser beam in a predetermined modulation unit,
• wherein the predetermined modulation unit includes a 70% wavelength shift for an odd-numbered frame and a 130% wavelength shift for an even-numbered frame;
• and
• converting the projection signal data to which the correction process is applied into electric current data of a driving current to be supplied to the laser light source.

A non-transitory computer-readable medium storing instruction that when executed by a computer of a video projection control apparatus, causes the computer to perform a noise reduction method by:

• calculating projection signal data to project video for projection using, as a light source, a laser beam output from a laser light source, from video signal data of input video, the laser light source having a property that a wavelength shifts in accordance with an emission intensity employed when the laser beam is emitted;
• applying, to the projection signal data, a correction process of shifting the wavelength of the laser beam in a predetermined modulation unit,
• wherein the predetermined modulation unit includes a 70% wavelength shift for an odd-numbered frame and a 130% wavelength shift for an even-numbered frame;
• and
• converting the projection signal data to which the correction process is applied into electric current data of a driving current to be supplied to the laser light source.