About holographic photos

That's a good idea. . . In fact, holographic technology uses the principle that human eyes only record the information of light, not the actual information of the object, so we only need to record the light reflected by the object observed by our eyes, and it is in the case of equal light sources. I remember that when we did experiments, we used the principle of light interference to record them. In a completely dark room, use a mirror or a beam splitter to split the laser beam into two beams. Because the frequency of the laser beam is single, one of them hits the photosensitive glass directly and the other hits the object, causing diffuse reflection. According to the different surface conditions of the object, the intensity and phase of the laser beam reflected on the photosensitive plate and the laser beam directly hitting the photosensitive glass will be different, and it will be recorded by the photosensitive glass after interference. Then reverse the operation at the same position, the laser reflected by the object can be reproduced, and the human eye can observe the same image as the original object. But this can only record those parts that can be hit by laser. If all surfaces are to be recorded, it may be complicated, and it may be necessary to improve the recording method or laser irradiation method. Wearing a skirt is theoretically possible, but I don't think you can let the laser shine there. . . As for the bottom floor of the room, I don't think it can be filmed, so I can't record it. The reason why holographic technology can't be applied in practice now is that natural light sources can't be restored. Even if you recorded the information of reflected sunlight, but you didn't have the information such as irradiation angle, frequency and intensity of irradiation light source, which is equivalent to telling your name, personality and gender, but you didn't tell your place of origin and date of birth, so you can't restore it.