06-04-2022 дата публикации
Номер: GB0002599436A
Принадлежит:
Holographic projection, comprising: receiving an image for projection; forming an image frame (500, 500’) comprising first (501, 501’) and second (502, 502’) image regions, where the first image region corresponds to the image and the second image region corresponds to non-image content representative of system control parameters; applying (656) first gain factor to non-image content to change grey level of non-image content in image frame; calculating hologram (660) of image frame; displaying hologram and illuminating (662) it with light from a light source to form a holographic reconstruction of image frame; measuring (664) parameter representative of luminance of holographic reconstruction of non-image content; scaling measured parameter in accordance with an inverse of first gain factor to obtain parameter value representative of true luminance of holographic reconstruction of non-image content; controlling (610) optical power of light illuminating hologram until true luminance of holographic ...
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