A Uniform Display Method Based on Frame Rate Control
A uniform display and frame rate control technology, applied in the direction of digital output to display devices, can solve the problems of slow display, long continuous rendering time, delay, etc., to solve unreasonable settings, optimize display effects, and wide applicability of the method Effect
Active Publication Date: 2021-04-27
北京维盛泰科科技有限公司
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[0003] 1. The display time of each frame in the display window is completely determined by the rendering time of this frame, which will cause the display window to have no fixed frame rate. If the system renders fast, the display will be fast, and if the rendering is slow, the display will be slow. Sensible
[0004] 2. The performance of the processor will fluctuate during the operation of the SLAM system. If the performance of the processor is not good at this time, the continuous rendering time will be too long, resulting in the frames processed by the SLAM system not being displayed in time and being discarded. If Continuous frame loss will cause delay;
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[0037] Below, refer to the attached Figure 1 to Figure 2 As shown, the uniform display method based on frame rate control includes:
[0038] Step 1. Obtain the time t when the current frame F reaches the display window begin , display the waiting queue length queue_size, and the frame number of the current frame is q;
[0039] Further, when the current frame reaches the display window, data acquisition is carried out, including the time when the current frame arrives and is recorded as t begin , the current display queue queue_size, the current frame frame number q;
[0040] Step 2. Determine whether the queue length is greater than the limit value queue_lim, if greater, discard the current frame F, otherwise continue;
[0041] Furthermore, the queue length limit queue_lim can be set, and the default is the queue capacity. When the system renders too slowly, it will cause a large number of frames to wait in the queue. To avoid delays, when the queue length is greater than ...
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A uniform display method based on frame rate control, including: obtaining the time t when the current frame F reaches the display window begin , display the waiting queue length queue_size, the current frame frame number is q; judge whether the queue length is greater than the limit value queue_lim, if it is larger, discard the current frame F, otherwise continue; obtain the time t when the rendering of the current frame in the display window ends end , calculate the current frame display time t d ;Calculate the average duration t displayed in the sliding window ave , to calculate the lag time t lag ;According to the current display waiting queue length, the dynamic adjustment of the display frame rate is performed; the sleep time is calculated, and after the current frame sleep ends, the next frame is executed and the cycle operation is performed. This invention uses a uniform display without improving the SLAM system algorithm. The method uses a dynamic adjustment mechanism to improve the user's visual experience.
Description
technical field [0001] The invention relates to the technical field of SLAM display methods, in particular to a uniform display method based on frame rate control. Background technique [0002] After more than 30 years of development, SLAM technology has become an important technology in the fields of drones, autonomous driving, robots and augmented reality. For technologies such as augmented reality that require extremely high user visual experience, the display of SLAM The effect is very important; whether it is a SLAM system based on the feature point method or the direct method, it is directly sent to the display window for display after the front-end processing is completed. This mechanism mainly has the following shortcomings: [0003] 1. The display time of each frame in the display window is completely determined by the rendering time of this frame, which will cause the display window to have no fixed frame rate. If the system renders fast, the display will be fast, ...
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IPC IPC(8): G06F3/14
CPCG06F3/14
Inventor 康健杨兰李笑寒王志军
Owner 北京维盛泰科科技有限公司