CN106056654B

CN106056654B - Method for outputting and playing process video in three-dimensional assembly simulation

Info

Publication number: CN106056654B
Application number: CN201610370150.0A
Authority: CN
Inventors: 陈冠宏; 常青; 江洪涛
Original assignee: Wuhan Kaimu Information Technology Co Ltd
Current assignee: Wuhan Kaimu Information Technology Co Ltd
Priority date: 2016-05-30
Filing date: 2016-05-30
Publication date: 2019-12-17
Anticipated expiration: 2036-05-30
Also published as: CN106056654A

Abstract

The invention relates to a process video output method in three-dimensional assembly simulation, which comprises the following steps: sequentially simulating and playing three-dimensional animation of the process of the assembly process; converting the three-dimensional animation into a series of continuous pictures; recording node information of each assembly process; and converting the pictures and the node information of each assembling process into video files and corresponding process information files. The invention also comprises a process video playing method in the three-dimensional assembly simulation, which comprises the following steps: acquiring the video file and the corresponding process information file; the invention can realize the sub-process browsing using a single video file and an additional index file in the three-dimensional assembly simulation.

Description

method for outputting and playing process video in three-dimensional assembly simulation

Technical Field

The invention relates to the technical field of computer aided design, in particular to a method for outputting and browsing a process video in three-dimensional assembly simulation.

Background

The mechanical design has achieved three dimensions. The mechanical production process design also gradually realizes three-dimension, so that the workshop in the three-dimensional process is a technical trend.

three-dimensional assembly systems display many parts at once, placing very high demands on computer graphics systems. While the production department of a general factory does not have a high-performance computer. Therefore, the three-dimensional process is generally recorded as an AVI video file and played and watched on the workshop terminal. In the prior art, one AVI file is recorded for each process, but one assembly process usually comprises tens of processes, and the recording of tens of AVI files is very inconvenient to manage.

Disclosure of Invention

the object of the present invention is to address the above-mentioned drawbacks of the prior art. A method for outputting and browsing a process video in three-dimensional assembly simulation is provided.

The technical scheme of the invention is that a method for outputting and browsing a process video in three-dimensional assembly simulation comprises the following steps: sequentially simulating and playing three-dimensional animation of the process of the assembly process; converting the three-dimensional animation into a series of continuous pictures; recording node information of each assembly process; and converting the pictures and the node information of each assembling process into video files and corresponding process information files.

further, the step of converting the three-dimensional animation into a series of consecutive pictures further comprises the steps of: performing off-screen rendering on the three-dimensional scene every time one frame of animation is played; and converting the three-dimensional scene animation into a series of pictures according to the time sequence of the simulation playing.

Further, the step of recording the node information of each assembly process further comprises the following steps: every time when playing is started from one process or when the process is switched to the next process, the name of the process, the work order number and the number of playing frames at that time are recorded.

Further, the step of converting the information of each assembling process picture and each node into a video file and a corresponding process information file further comprises the following steps: multiplying the playing frame number by the video file target frame rate to obtain the accurate time of video playing at the moment; storing the process names and the start and end times of the process in an information file in a one-to-one correspondence manner; converting the picture into a video file; two files are generated: video files, process information files.

The invention also provides a technical scheme of a process video playing method in three-dimensional assembly simulation, which comprises the following steps: acquiring the video file and the corresponding process information file; and selecting a designated assembly process and playing the corresponding segment of the video file.

further, the step of selecting the designated assembly process and playing the corresponding segment of the video file further comprises the following steps: reading the procedure information file and presenting all assembly procedures; when a certain procedure is appointed to be played, finding out the starting time T1 and the ending time T2 of the procedure in a procedure information file, and obtaining the simulation time length T3 of the procedure by using T2-T1; setting the video player to start playing from T1, and simultaneously setting a timer to count the time length T3; when the timer counts the simulation time length T3 of the process, the video playing is automatically stopped.

the invention has the beneficial effects that: the method realizes the split-process browsing by using a single video file and an additional index file.

drawings

FIG. 1 is a schematic flow chart of a process video output method in three-dimensional assembly simulation;

Fig. 2 is a schematic flow chart of a process video playing method in three-dimensional assembly simulation.

Detailed Description

the invention is further described below with reference to the accompanying drawings.

a) And opening a three-dimensional assembly process file, and simulating and playing the three-dimensional animation according to the procedure sequence of the assembly process.

b) And performing off-screen rendering on the current three-dimensional scene to pictures every time one frame is played, and converting the three-dimensional scene animation into a series of pictures according to the time sequence of the simulation playing.

c) Every time when the broadcasting is started from one procedure and the procedure is switched to the next procedure, the broadcasting frame number, the name of the procedure and the work order number are recorded.

d) due to the limited three-dimensional simulation and the computer performance, the direct timing is not accurate. Therefore, the precise time of video playing at the moment can be obtained by multiplying the playing frame number by the AVI target frame rate. And storing the process names recorded before and the start and end times of the process in an information file in a one-to-one correspondence manner: storing the previously recorded process names and the start and end times of the process in a syn file with the same name as the AVI file in a one-to-one correspondence manner; outputting and coding and compressing each picture according to a certain frame rate by using vfw technology: outputting each picture at a rate of 25 frames per second using vfw techniques and compressing using h.264 techniques; after the recording is finished, two files are obtained, one is an AVI video file, and the other is a syn file.

S6: when playing the AVI, loading the AVI video file and the syn file corresponding to the AVI video file at the same time. When the AVI file is played on the workshop terminal. The player reads the syn file and displays all the procedures in the file. When a user specifies to play a certain process, the system finds the start time and the end time of the process in the process information file. And obtaining the simulation time length of the procedure by using the ending time-starting time. And setting the AVI video player to start playing from the specified time of the AVI. And simultaneously setting a timer for timing. And when the timer counts the simulation time length of the procedure, the video playing is automatically stopped.

In light of the above technical idea, those skilled in the art can make various modifications to the method for running an application program without departing from the scope of the invention, which still falls within the scope of the invention.

Claims

1. A process video output method in three-dimensional assembly simulation is characterized by comprising the following steps:

a) Sequentially simulating and playing three-dimensional animation of the process of the assembly process;

b) Converting the three-dimensional animation into a series of continuous pictures;

c) recording node information of each assembly process;

d) And converting the pictures and the node information of each assembling process into video files and corresponding process information files.

2. The method of claim 1, wherein said step b) further comprises the steps of:

b1) performing off-screen rendering on the three-dimensional scene every time one frame of animation is played;

b2) And converting the three-dimensional scene animation into a series of pictures according to the time sequence of the simulation playing.

3. the method of claim 1, wherein said step c) further comprises the steps of: every time when playing is started from one process or when the process is switched to the next process, the name of the process, the work order number and the number of playing frames at that time are recorded.

4. The method of claim 1, wherein said step d) further comprises the steps of:

d1) multiplying the playing frame number by the video file target frame rate to obtain the accurate time of video playing at the moment;

d2) storing the process names and the start and end times of the process in an information file in a one-to-one correspondence manner;

d3) Converting the picture into a video file;

d) Two files are generated: video files, process information files.

5. a process video playing method in three-dimensional assembly simulation is characterized by comprising the following steps:

a) Acquiring the video file and the corresponding process information file;

b) Selecting a designated assembly process and playing a corresponding segment of the video file;

wherein the step b) further comprises the steps of:

b1) reading the procedure information file and presenting all assembly procedures;

b2) When a certain procedure is appointed to be played, finding out the starting time T1 and the ending time T2 of the procedure in a procedure information file, and obtaining the simulation time length T3 of the procedure by using T2-T1;

b3) Setting the video player to start playing from T1, and simultaneously setting a timer to count the time length T3;

b4) when the timer counts the simulation time length T3 of the process, the video playing is automatically stopped.