Light field display control method and apparatus, and light field display device

A light field display control apparatus, comprising:

• a processor, a communications interface, a memory, and a communications bus, wherein the processor, the communications interface, and the memory communicate with each other by means of the communications bus;
• the memory is configured to store at least one instruction, and the instruction causes the processor to perform the following operations:
• determining a depth distribution sub-region of content according to at least depth distribution information of the content, wherein a display quality control is performed on the depth distribution sub-region of content;
• and
• adjusting a focal length of a first lenslet according to at least a display depth of field (DoF) range of a light field display device and the depth distribution sub-region, wherein the first lenslet is a lenslet that is in a lenslet array of the light field display device and affects display of a first object, and the first object is a part, which is located in the depth distribution sub-region, of the content,
• wherein, adjusting the focal length of the first lenslet comprises:
• determining expected display depth information of the first object according to at least the display DoF range;
• determining an expected focal length of the first lenslet according to the expected display depth information and a distance between a monitor and the lenslet array in the light field display device;
• and
• adjusting the focal length of the first lenslet according to at least the expected focal length by:
• determining, according to the expected focal length of the first lenslet, a phase difference that is formed after incident light passes through different parts of the first lenslet;
• determining, according to a mapping relationship between phase differences and external fields, an external field corresponding to the phase difference;
• and
• changing, by means of the external field, the phase difference that is formed after the incident light passes through the different parts of the first lenslet to adjust the focal length of the first lenslet.