Some considerations for GB28181 docking with the Hai Kang 8200 platform
Recently, a project in our side developed an NVR class equipment and Hoi Hong 8200 platform for GB28181 docking, before and after the toss of one weeks to complete, no other developers to provide technical support and documentation, we can only according to the national standard agreement to try, very uncomfortable.
Basically, there are a few places to be aware of:
1 after the first time the device sends the registration
scripts to produce the final makefiles (is used to generate makefile files, so it is more important to file)
Overall, the process diagram is like this
(Transferred from HTTP://BLOG.ZQUAN.ME/?TAG=ACLOCAL-M4)
As long as you can see the diagram, the generation of makefile will not be confused about the order.
The following project directory, is my new directory, I based on this directory to explain how to build a compilation project.
"Engineering Catalog"
Module NOTES:
Driver: Driver code
Sun Guangdong 2015.8.15First, Enemy Aim AiPurpose: The main purpose of this article is to let you know about how to use the Enemy aim Ai. You will get the result:Enemy aim AI is very useful when you want enemies to keep tabs on the player. Proper targeting of objects in real-world scenarios takes time, so the enemy will take some amount of time before it locks on the target system.This effect can create a lerping rotation angle against the player's enemies. This situation is very useful in the c
First, let's take a look at the two commonly used camera models in the game: the Euler's camera model and the uvn camera model.
1. Euler's camera model
Euler angles is a method used to describe the direction of a rigid body in a three-dimensional Euclidean space) describes the direction of an object.
Notes:
1) undo
Assume that the angle transformation sequence applied to an object is Pyr. To restore the original direction of the object, the transformation sequence to be applied is: (-R) (-y) (
angles, matrix, and tuples. Compared with other methods, tuples have their own advantages:There will be no gimbal lock problem in the Euler's corner in the Quaternary element.The Quaternary element consists of four numbers, and the rotation matrix requires nine numbers.Easier interpolation between two EnisAfter multiple operations, the Quaternary and matrix will accumulate errors. normalize and orthogonalize need to be done respectively to normalize
such a powerful and stable, easy-to-use, open-source visual library for the world, and continuously maintaining and updating it.I thank my parents for raising my adult, thank you for the attentive of the family, you are my strongest backing.Thanks to my alma mater, Nanjing University of Aeronautics and Astronautics gave me a reluctant mediocrity, up and down Quest heart.Thanks to the Daiquan teachers of Nanjing University of Aeronautics and Astronautics for their help and support in publishing
-1500 degrees;(3) may cause universal joint deadlock (Gimbal Lock).1.2 Flat Universal Joint deadlockWhen two loops overlap, there is a loss of one degree of freedom, as shown in 2. For universal joint deadlock can refer to "1" "2" "3", especially the "1" provided video, the introduction of knowledge points very vivid. It is also because of the existence of the lock that it is not possible to use Euler angles to achieve smooth spherical interpolation.F
Section 5 familiar with the software tools use 6 View Code and burn code process 7 Inspection Trolley Finish QualityFirst, to understand the necessary knowledge of the car installationRelated booksRecommended from BaiduIt is said that these are the books of the legendary level, for we can only be tastedSecond, install the necessary program softwareInstalling Arduino development Software Arduino-1.0.5-windowsThree, learn video tutorialMost of the problems in the video can be explained in a good
PIC x pid is a 0 vector, and the hinge is lost, resulting in gimbal lock. The problem is analyzed later.
Above is the basic algorithm of CCD problem, the following records some problems in actual use:Constraint (constraints)taking into account the DOF and the angle of rotation, you need to add the maximum and minimum values to the rotation angle of each joint. These limitations are local limits of the joint point, and when rotated with the CCD T
Our current RTSP video solutions are as follows:Webcam If the NVR uploads via wired, there is no pressure to upload the main stream data, but if the 4G card is used to upload, the use of sub-stream will show the phenomenon of flower screen and skip frame. If the third stream is used, there will be no skip frame phenomenon. When the gimbal rotates, the flower screen phenomenon is not serious.The sub-stream settings are as follows:The third stream is se
also hasTwo-way intercom callfunction, can make in the Teaching Center observation, consultation of medical personnel and remote surgery site real-time interaction, to achieve the purpose of telemedicine and teaching. Through the staff operation of the computer, control the operating room environment camera and shadowless lamp camera lens zoom, gimbal horizontal, vertical orientation, the operation processaudio and video capture, the medical personne
make on the game. In fact, this breakthrough requires the participation of art. Let me give you the most obvious example. Actions, especially Max, have simple and convenient CS, so many people do not understand the basis of the skeleton, resulting in their own understanding of the skeleton and animation is very crude, for example, the shaking caused by Ik, the axial changes caused by gimbal, and the deformation of sub-objects caused by scaling may be
1. Download the latest version of the device network sdk:http://www.hikvision.com/cn/download_more_401.html, notice the 32-bit 64-bit2. Unzip the SDK file, enter the Demo sample->java Development Example->clientdemo-netbeanspro directory has a description file, the contents of the file:"Demo Content description"-------------------------------------This demo mainly introduces the basic functions of preview, Replay, gimbal control, parameter configurati
public voidAwake () { one Print (transform.eulerangles.x); a Print (transform.eulerangles.y); - Print (transform.eulerangles.z); - } the}View CodeAnd the precautions to use are marked BELOW.Do not set one of the eulerangles axis separately (eg. eulerangles.x = ten;) Since this would leads to drift and undesired R Otations. When the setting them to a new value is set them all at once as shown Above. Unity would convert the angles to and from the rotation stored in transform.rotationdo n
Preface
The message passing process from the physical port of flight control to the application layer is sorted by combining the Mavlink message previously added.By the passing of the whole frame in the comb again; here combined with Rover to narrate, May and copter some difference, start first ~ libraries
Here needs to explain, regarding the Mavlink the agreement and the generation part, here does not have the detailed description, after specially writes an article to narrate separately.Or say
The contents of the previous post record are implemented using algorithms (AS2.0)
function calculates the visible radius (Specify pitch angle: number, specify Tower height: number) {If (Specify tower height Tower height H, earth radius r, place name arc length = square root 2RHEarth average radius r=6371004; MetersVisible meter distance =math.sqrt (2*6371004* specified tower height);Specifies that the gimbal pitch angle be recorded at a Cartesian coo
302 redirect and gets to the back URL address to know where the user went after leaving www.yahoo.com
blank img Tag-beacon Beacon
Avoid excessive DNS lookups
3.?Advanced
Interface response lag caused by long-running threads
Multithreading with work threads or gear plugins
Use timers to run scripts or suspend scripts intermittently
The script is divided into
half of the year, which also showed a certain performance at the exhibition. In the booth of beacon technology, beacon used the largest exhibition stand, displaying the achievements and products of the group company in terms of optical devices and optical modules.
In the E2 Exhibition Hall, Pson communications from Zhejiang Province has also received special attention from visitors. Psson communication mai
association. The standard requires the AP to send beacon frames periodically, including the SSID and MAC address of the AP. For the host, the scan channel listener beacon frame is called passive scan, you can also broadcast a probe frame to perform the so-called active scan. Advanced features of Wi-Fi include Rate Adaptation and power management. Other IEEE 802 protocols include Bluetooth and WiMAX. The 80
interchangeable. The difference between the two:Scope Signal Volume: Process or line threads (unknown semaphore between Linux threads only pthread semaphore)Mutual exclusion Lock: Between Threadssignal Volume when locked:As long as the semaphore value is greater than 0, the other thread can sem_wait success, and the value of the semaphore is reduced by one after success. If value is not greater than 0, then sem_wait causes the thread to block until Sem_post is released with a value of one, but
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