Today began to work on the C # launch camera, previously done with C + + call OpenCV Library to start the camera, C # theoretically can also. But read this blog notes, immediately brain hole open, the original can and the camera to deal with the library so much AH. Before I could do it until OpenCV. Ashamed, his knowledge is too narrow.
Of course, today's plays a
From: http://blog.csdn.net/ljsbuct/article/details/7094670
I. Application Layer
The application layer of camera is a camera application APK package developed by directly calling SDK APIs on Android. The code is in/Android/packages/apps/camera. It mainly calls the Android. Hardware. Camera (in the Framework) class and i
1. Camera speed is slow
Failure phenomenon: The newly bought camera installed on the internet, feeling the speed is too slow, replaced the Internet dial-up location and ISP, the result is still very slow. Test the camera when not on the Internet and find that the image is slow to display.
Analysis and treatment: This phenomenon is due to the computer performanc
Android cameraSeries Development (III): Taking photos through cameraapi
Author: Rain csdn blog: http://blog.csdn.net/gobitan/
Overview
There are two ways to use camera: using an existing app through intent and building your own app through camera. The intent method has been introduced in Series 1 of development. This article describes how to take photos through cameraapi.
Key classes
Several key classes ne
Document directory
1. synchronous broadcast mode
2. asynchronous broadcast mode
When developing video chat applications, we often need to obtain camera-related information. In video chat, we may also want to have dynamic capabilities. For example, you can switch to a camera without interrupting video chat, or modify the resolution or encoding quality of the camera
Jinshan Security Center found that a considerable part of the camera can not use the problem is due to Trojan virus, poisoned criminals will operate the camera illegally shooting to achieve the purpose of extortion, Jinshan guards can be removed by the virus caused by the camera can not be used by the problem. And defense of this type of virus intrusion into the
The application of computer is now very extensive, now work, life, entertainment, learning and so many are inseparable from the computer. At any time in life to use the computer, so small and portable notebook computer emerged. This small, portable computer has become a daily necessity for many people. With the progress of technology, now notebook computer also has a lot of functions, such as Bluetooth function, camera function, fingerprint recognitio
My knowledge of Android camera will be written all over again, gradually perfecting the camera network in the brain.
2 separate processes for 1.Android camera
Android Camera is the C/s architecture has been said to be rotten, but I still want to write down this article, because I often have a short head, on the clien
Industrial cameras, also known as industrial cameras or industrial cameras, have high image stability, high transmission capability and high anti-jamming capability compared to traditional civilian cameras (cameras), and most of the industrial cameras on the market are based on CCD (Charge coupled Device) or CMOS (complementary Metal Oxide Semiconductor) chip camera. CCD is the most commonly used image sensor in machine vision at present. It is a typi
// Create a camera
// Scenemanager is a pointer to an existing scenario manager instance.
// Here we construct a camera named "maincam.
Camera * camera = scenemgr-> createcamera ("maincam ");
// You do not need to calculate anything. You can directly obtain this size from the view. The actual view aspect ratio is.
One of the basic tasks of computer vision is to calculate the geometrical information of objects in three-dimensional space from the image information acquired by the camera, and to reconstruct and recognize the object, and the relationship between the three-dimensional geometric position of a point on the surface of a space object and its corresponding point in the image is determined by the geometric model of the
Pinhole camera model. The pinhole is an imaginary wall (the center has a tiny hole). Light can only pass through this opening, while the rest is blocked by the wall. Below we will start with a pinhole camera model and process the projection rays in the basic geometry. Unfortunately, the real pinhole is not a good way to get an image because it does not collect enough light to be quickly exposed. This is why
How do you use a laptop camera? Most laptops now come with cameras. I used to use the Windows XP system directly on my computer to see the video device clicked on to open the notebook camera, but now the latest Windows 7 system has the video to the independent software control, so the video device in My computer has not been found, Here's how to use the notebook camera
With the upsurge of network video chatting, the camera has become an inseparable tool for netizens. However, we can still meet some common problems in the use, today, we have collected 10 more common problems, for everyone to answer.
Q1 My computer can't detect the camera?
A: Check the operating system, BIOS, USB interface, and installation is incorrect.
Solution steps:
First step: If your operating sys
Requirements: IPC HD Camera Knowledge ReserveContent: The first part analyzes the advantages and disadvantages of CCD sensor and CMOS sensor from four aspectsThe second part analyzes the technical parameters of the digital cameraOrganize the poems from: TimeThe first part analyzes the advantages and disadvantages of CCD sensor and CMOS sensor from four aspectsFrom: http://www.elecfans.com/yuanqijian/sensor/20140724349368.htmlCCD sensor and CMOS sensor
Detect available features
// get Camera parametersCamera.Parameters params = mCamera.getParameters();List
You can use the method shown above for most camera features. camera. the parameters object provides a getsupported... (), is... supported () or getmax... () method to determine whether a feature is supported.
If your application requires specific
Camera cannot be used for reason analysis:
1, may be the computer can not recognize the camera equipment;
2, the camera is not carefully estimated to be disabled;
3, the camera driver is not installed, in some cases, the system itself does not have the camera's universal compatibility driver data, so it will not aut
To the photography enthusiasts to detailed analysis to share the Canon 600D camera lens can and Canon 550D camera is not universal problem.
Analytical sharing:
Canon 600D lenses can be used on Canon 550D cameras. Because now only the camera brand and brand direct lens can not be universal, if you want to use only to buy the adapter.
But a brand lens can be uni
Camera Drive Debugging small note
Applications using the V4L2 API to operate Camera devices are more uniform, but implementations of the Camera drive are diverse, such as UVC (USB-free-drive camera) and Soc-camera.
The former does not require additional drivers, so don't wo
The idea of a camera that can freely observe irregular high-speed moving objects in unity
In unity, to allow the camera to freely observe a high-speed, irregular motion when a particular key is pressed, it is necessary to calculate the offset between the camera and the observed target at the time the key is pressed for subsequent operations. But there is a probl
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.