Stereoscopic image coding method and coding device with motion prediction
A stereoscopic image and motion prediction technology, applied in image communication, stereoscopic systems, electrical components, etc., can solve problems such as dizziness, head-mounted display real-time delay, etc., and achieve the effect of optimizing the application space
Active Publication Date: 2016-12-07
SHENZHEN WEIA TECH
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[0003] Now all high-definition video transmission adopts H.264 and H.265 encoding, which compresses the capacity of data transmission. The three-dimensional 60p high-definition image can achieve 30M bytes per second, which can solve the problem of transmission rate. , but because the encoding time is generally more than 50 milliseconds in the technical specification, and the actual delay in other processes of transmission and decoding and display reaches 100 ms, a new problem has arisen in the real-time performance of the head-mounted display—letting the visual nerve produce A serious sense of delay, causing people to feel dizzy
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[0033] figure 1 It is a schematic diagram of the steps of the stereoscopic image encoding method with motion prediction according to the embodiment of the present invention.
[0034] A stereoscopic image encoding method with motion prediction, the method is used to perform image encoding of virtual reality technology, comprising the following steps,
[0035] Step 101 initializes each module of the system, and the encoding unit divides the real world and establishes a three-dimensional space storage table;
[0036] Step 201: Encode and store the images in the shooting range of the camera in real time, and continuously update the contents of each storage grid as the trajectory of the head changes;
[0037] Specifically, the high-definition camera of the head-mounted display replaces the position of the human eye, and captures images larger than the visual range of the human eye by 20° in real time; The content in each storage grid Mij is updated according to the constant chang...
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The invention provides a three-dimensional image coding method with a motion prediction function for a head-mounted display in virtual reality. The method comprises the following steps: dividing the real world by a coding unit and establishing a three-dimensional space storage table; coding the image in a shooting range of a camera in real time and storing lattices and continuously updating the content of each storage lattice along with change of the motion trail of the head; acquiring a motion trail curve of the head and analyzing the position of the lattice to be updated in the next visual window; taking out all data from the storage lattice in the to-be-updated lattice position for compressed coding and storing in a high speed internal storage device; and integrally fusing and displaying visual data of a virtual scene and the real world, input to an application processor, according to the current motion trail position. The method solves the problem of dizziness generated by image delay in a virtual reality technology. The invention further discloses a coding device which is compact in structure, low in cost, wide in application range and anti-dizziness based on virtualization technology and has a high data compression capacity.
Description
technical field [0001] The invention belongs to the field of data processing equipment, and in particular relates to a stereoscopic image coding method and coding device with motion prediction, which are suitable for virtual reality head-mounted displays. Background technique [0002] In virtual reality technology, compression coding technology is used in order to efficiently transfer and store video data. Now the mainstream image coding is 4k resolution or 2k (1080p) display technology, the data volume of a single-channel video stream can reach the data volume of an uncompressed single-frame image is more than 30M bytes per frame; In the application of the display, since the near-pupil eyepiece magnifies the details of the image, the refresh rate of the image needs to be at least 60 frames per second, and the dynamic image will exceed 1.8 Gbytes per second, which exceeds the current fastest common data transmission buses. Such as the maximum transmission rate of Usb3.0, th...
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IPC IPC(8): H04N13/00H04N19/597
Inventor 刘宛平陈治
Owner SHENZHEN WEIA TECH