The difference between high-speed cameras and action cameras

I found that there are very few comparisons between the two on the Internet, and many of them confuse the two. Either everyone understands high-speed cameras as "ultra-high-speed cameras" and action cameras as "high-speed cameras." "In fact, there are certain differences between the two.

Who is better, Messi or Cristiano Ronaldo, shot under a high-definition camera

Video description: I originally wanted to find a comparison video, but the software installed on my computer cannot convert the video format, so Just upload the video link directly.

1. Different concepts:

High-speed camera - high-speed camera is a type of industrial camera. Generally, high-speed camera refers to a digital industrial camera, which is generally installed on the machine assembly line instead of The human eye makes measurements and judgments, converts the digital image capture target into an image signal, and transmits it to a dedicated image processing system.

Action camera - refers to a camera that is convenient for shooting during sports. It is a compact camcorder designed to capture the perspective from the user's point of view. They're generally easy to use, rugged, and can shoot both video and still images.

2. Different characteristics:

High-speed camera - (take the AoShi motion capture SK series high-speed camera as an example)

(1) USB 3.0 interface, Plug and play, easy to install;

(2) Resolution from VGA to 5 million pixels;

(3) When the resolution is 640 480, the frame rate can reach 1100 frames / second, higher frame rates can be achieved after opening the window;

(4) Comes with high-speed acquisition and playback software, easy to operate;

(5) Use raw format for original data storage , to facilitate various data processing in the later stage;

(6) The stored raw format files can be converted into avi universal video format;

(7) The stored raw format files can be frame-by-frame Save pictures in bmp format;

(8) Suitable for C-mount or CS-mount lenses;

(9) The camera is exquisite and compact, easy to carry and install: size 38x38x43.5 mm, heavy 30g;

(10) Support online upgrade of firmware program.

Action camera——

(1) Compact and portable. Sports cameras currently on the market are usually only the size of a matchbox and weigh less than 200g. Compared with traditional cameras, their size and weight are significantly smaller and more convenient to carry. However, being small and portable does not mean a decrease in image quality. , most devices can shoot 1080P high-definition videos, and some models can even shoot 4K videos. The new generation products are equipped with WIFI function, which is convenient for transmission with smartphones and tablets and can be shared in time.

(2) Mostly use "first-person-view image" shooting. The so-called "first-view images" refer to videos and photos taken from the same angle as the user's line of sight. In sports, you can follow the athletes and experience the images seen by the users who are moving. This angle of view can be changed at will depending on the fixed position of the machine, realizing a new experience of "shooting on people or objects". At present, almost all sports cameras have professional accessories and are waterproof and dustproof. They can work in extreme environments that many ordinary cameras cannot withstand, which also greatly improves the practicality of the machine.

(3) You can free your hands. When shooting conventional videos, whether you use a mobile phone or a special camera, you must hold the device with your hands. Even if it is fixed with a bracket, it is difficult to change the angle of view at will. Sports cameras solve this problem well. Problem, many action cameras currently come with a lot of accessories, such as selfie sticks, card slots for different devices, fixtures, underwater shooting kits, etc. With a more flexible wearing method, it can be hung on the body, helmet, car hood, or even a surfboard. Even under high-speed movement, it can achieve high image quality, continuous shooting and timed Selfie functions, which greatly caters to the psychology of self-portrait enthusiasts and adds a lot of fun.

(4) Use wireless technology more often. Sports cameras mostly use advanced wireless control technologies such as WiFi remote control and gravity-sensing lenses. You can use mobile phones or tablets and other devices for wireless remote control operation and shooting. The built-in wifi technology also allows wireless transmission between the camera and mobile phones, laptops, etc., and can even be uploaded to the cloud. You can share high-quality photography images with friends more quickly and conveniently.

3. Different application scenarios

High-speed camera——

(1) Military field: Gunpowder blasting analysis. Ballistic analysis. Explosive explosion, bullet exiting the chamber , Rocket launch. Pyrotechnic analysis, defense device design, impact analysis, weapon mechanical movement analysis, gunpowder ignition process, flight analysis, armor penetration process analysis, gunfire analysis, etc.

(2) Biomedical field. High-resolution high-speed microscope imaging. High-speed cell imaging; biomechanics; biological movement analysis; animal simulation; animal movement analysis; human gait analysis; insect or bird wings Exercise; rehabilitation physical therapy. Cell, valve movement, bleeding observation; swallowing, respiratory flagellar movement. Automobile testing areas: airbag analysis; robot action analysis; swing arm analysis; impact test; structural analysis; protective device performance test; cylinder jet .

(3) Sports field: simulation equipment testing; sports action posture analysis; shooting at the moment of crossing the line; badminton, tennis, track and field, table tennis action posture analysis; golf action; sports auxiliary training.

(4) Film and television production fields: animation production; advertising photography; TV movies; animation special effects.

(5) Energy and chemical industry: gas phase flow, particle velocity measurement system; chemical crystallization process; jet flow, spray fluid analysis, combustion process; flame analysis; microchannel flow.

(6) Other professional fields: drop test; vibration analysis; impact analysis; welding; wire winding; cutting; lamination molding; printing analysis; bottle cap testing; tobacco machinery; operation action analysis or fault diagnosis , product development testing, mechanical and elastic analysis, discharge analysis, etc.

(7) High-speed particle imaging velocimetry; instantaneous physical phenomena; high-speed collision research; microscopic high-speed imaging; automobile collision testing; material testing; tension testing; microscopy; air bag expansion experiments; rapid fluid observation; spray Imaging analysis; fluid mechanics; fuel injection; switch discharge; combustion process analysis; semiconductor quality control; fast imaging research in nature and medicine; ballistics; ultra-slow-motion movie cutting; high-speed observation of biological phenomena (muscle contraction); transportation Control and so on.

In recent years, the configuration requirements for high-speed cameras in university experiments are much higher than those in industrial production and other fields.

Action camera -

As the name suggests, it is used in sports scenes. Action cameras can be used for shooting in sports environments such as hiking, mountain climbing, rock climbing, cycling, gliding, skiing, swimming, diving, etc. They can also be used for ordinary home shooting or monitoring.

Compared with the scientific research field, the application field of action cameras does not have high requirements on the frame rate per second, and is more about recording daily life.

Easy to use, equipped with anti-shake, waterproof, and anti-fog technology, as long as the resolution and pixels are high. Action cameras are mainly used to ensure the clarity of shooting when shooting fast-moving objects. , accuracy, emphasizing the first perspective of the sports environment, which is basically recorded by the photographer himself. I want to share a sports perspective with everyone, which can be said to be the representative of "sports and passion".

You can feel the difference through the following two videos. The second video has a slow-down effect. Action cameras do not have this function, or they cannot slow down so many times, so they are also sports events. For video analysis, everyone prefers to shoot with high-speed cameras and then analyze the actions, such as the comparison video of Ronaldo and Messi analyzed at the beginning.

Surfing under the blue sea and blue sky captured by a high-speed action camera and feeling the waves - Sports - watch the full version of the video online - iQiyi

The slow motion captured by the ultra-high-speed action camera seems to have opened up a new world World-Sports-Watch the full version of the video online-iQiyi

Action camera: This is called surfing! - Sports - Watch high-definition full genuine videos online - Youku

Austria Debe SK0604 high-speed camera 1100 frames/second slows down the shooting effect by 36 times