Smart Cameras Information

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Smart cameras are individual image processing systems designed to automate decisions in an industrial capacity. These video cameras link an image sensor with a processing unit to determine the next desirable step of a mechanical process. They are smaller than PC-controlled machine vision systems and may not offer the same features or interface, and also operate with a ‘set-and-forget' mentality. Most smart cameras do not provide a video feed, but instead offer data based on the internal analysis


Smart Camera Operation

Smart cameras possess the unique capability of individually analyzing images and communicating this data with external industrial regulators and interfaces. This allows the automation of simpler processing decisions, and their small footprint and internal (and often very powerful) processors make them more flexible than machine vision sensors. Frequently, smart cameras are linescan instruments with exceptional one-line resolutions.

Selecting smart cameras vision systems

Image credit: National Instrument


Smart cameras do not have a distinct appearance versus other camera types, but are rugged to maintain effectiveness in harsh environments. Without the need for particular imaging features, CCD and CMOS image sensors are common for smart cameras. Since a smart camera's imaging capabilities are seldom displayed, monochrome sensors are often satisfactory. Several smart cameras can be linked to create a unified vision system. Smart cameras incorporate important communication (e.g. Camera Link, GigE Vision, USB, FireWire)  links to send data to industrial components and remote interfaces. Since smart cameras are implemented circumstantially, some development cost can be expected.

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Smart Camera Production


Video Quality



As with other types of cameras, the lens plays a critical function in imaging quality. Lenses accurately refocus the field of view onto the small and sensitive image sensor, and also clear up any optical aberrations that occur. Camera lenses are marketed in standardized styles according to mounting.

C mount cs lens style video camera selection info    s mount lens w/ s thread attachment module

CS/C/S mount lenses

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  • C-mount lenses have a flange-back distance of 17.5 mm and are required for C-mount cameras. By comparison, CS-mount lenses have a flange-back distance of 12.5 mm. Because of their shorter back focal distance, CS-mount lenses cannot be used with C-mount cameras. C-mount features a diameter of 1" and a 32-thread per inch mounting thread. 
  • CS-mount cameras can use both C-mount and CS-mount lenses; however, C-mount lenses require either a 5 mm adapter or adjustments to the CS-mount camera. Because of their shorter back focal distance, CS-mount lenses can be used only with CS-mount cameras. CS-mount features a diameter of 1" and a 32-thread per inch mounting thread.
  • S-mount is a smaller mounting configuration used in devices such as PC cameras and board-mounted cameras. S-mounts use a M12 x 0.5 threads.
  • An F-mount lens utilizes a bayonet-style mount standardized by Nikon.

f mount lens technical drawing

F lens mount dimensions 

Image credit: Wikipedia



Resolution is the overall clarity of the image when displayed, as determined by the pixel count of the image sensor. For smart cameras, resolution ranges from 640 x 480 to 1600 x 1200 are most common. Linescan cameras have similar, one-line resolutions. In general, the lowest acceptable resolution should be used to keep camera processing manageable and quick.



Many smart cameras have an integral strobe to ensure proper illumination. This also reduces wiring, additional hardware, and shortens imaging processing time, essential components with machine vision systems.


Frame Rate

Smart cameras have image capture rates of 25—35 frames per second, though many cameras have partial modes capable of capturing 100 frames per second. Frame rates should not exceed to computational abilities of the processor, but that is only relevant on older-model smart cameras as processors become more capable. Indeed, high speed smart cameras have prevalent.


Shutter Speed

This is responsible for the duration that light reaches the image sensor, and is usually controlled by an electronic shutter. It directly controls the exposure rate along with the aperture. Common smart cameras are programmable to have exposure times from 22 µm to 1,000 ms. This feature is largely dependent upon the requirements of the vision system's processes. Smart cameras with other exposure times, even those mimicking high speed cameras, are available.

High speed smart image processing vision sensor camera

High speed smart camera

Image credit: Analogic-Computers


Smart Camera Specifications


Camera Mounting

Many smart cameras incorporate mounting holes for brackets and extendable arm mounts. For brackets, typically two connection points are sufficient for proper positioning. Since smart cameras are not monitored by an operator, they almost never utilize handheld or portable frame designs. Dust, tampering, and moisture covers can extend the life of smart cameras.

Smart camera assembly identified

Image credit: Machine Design



Camera Features 

These specifications are often optional on video cameras, but depending upon the use they will enhance video quality.





  • Auto-Lens: Auto-lens operation is a mode in which the lens iris automatically adjusts to maintain a predetermined level of light on the image pickup device. Cameras with auto-lens mode may also provide automatic lens focusing.


  • Cooled Sensor: Sensors are actively cooled by a Peltier element or other method. Cooling reduces "dark current" noise and improves sensitivity.

 Peltier cooled camera

Image credit: Apstas 

  • Dome: Cameras are enclosed in a protective dome made from materials such as acrylic or polycarbonate. Typically, these materials are optically-corrected for accurate image capture. This can create a tamper-proof housing common for security use.

 Dome tamper proof camera video ccd

Image credit: Jarrett Security


  • Gain Control: Automatic gain control (AGC) uses electronic circuitry to increase video signals in low-light conditions. This can introduce noise and, subsequently, graininess in the picture. Typically, AGC is disabled and specifications are presented with this feature turned off.
  • Gamma Correction: Gamma is the nonlinear relationship between the video signal level and the subsequent image element brightness. Gamma correction compensates for this nonlinearity in order to render the image true in color while providing intensity to the original object.
  • High Definition: High definition is a video standard that has higher picture sharpness, larger picture, more colors, and higher quality sound than regular video standards. The low-end threshold for HD video is considered 1,280 x 720 pixels.
  • High-Speed Camera: High-speed cameras record images at a higher frame rate than a typical camera. After recording, the images can be played back in slow-motion for close study of actions that may be ephemeral. This is particularly helpful for scientific study, but also has a wide variety of uses. Almost all modern high-speed cameras are digital in design and capable of recording over 1000 frames per second. Too many frames per second sacrifices area coverage while also producing a large, unwieldy file.

 Bullet through apple caught with high speed camera

Image credit: Tony Rogers

  • Low-Light Camera: These are meant to be used in dark situations where an otherwise suitable camera will not reach an exposure level capable of capturing an image. The cameras contain image sensors that are exceptionally perceptive of subtle light sources.


  • Outdoor Rated: Outdoor-rated devices are designed to withstand outdoor temperature variations, rain, snow, and other weather conditions.
  • Pan/Tilt: These devices have integral or optional mounting features enabling side-to-side (pan) and up-and-down (tilt) controllable motion.

  • Progressive Scan: This is a CCD design that allows acquisition of both even and odd fields at the same time. Each pixel contains information from one complete frame. This technology allows high resolution without the use of a mechanical shutter. Progressive scan cameras are used for image acquisition of rapidly moving objects and accurate dimensional measurements.
  • Radiation Hardened: Devices are designed to withstand high levels of radiation. These cameras can be used in nuclear facility applications, or in scientific research that will expose the device to radiation.


Image credit: Thermo Scientific


  • Underwater Rated: Devices are designed to work when completely submerged in water. This feature can be added with an aftermarket housing.

 Underwater camera

Image credit: JW Fisers


  • Zoom: Cameras are designed with a feature that allows the device to closely focus on distant objects. Optical zooms offer better resolution than digital zooms.
  • 3D Recording: The camera has the capability of recording images in three distinct directional planes. This is helpful for recording the depth of an object.

3D industrial camera

Image credit: Automation World


Smart Camera Applications

Smart cameras are successful for non-contact measurement, product and processing inspection, quantifying, sorting and identification, code reading, robot input, and an otherwise endless list of employments. Due to their small size and ease of connectivity, smart cameras are only limited by the innovation of the operator. It is common to find smart cameras in automobile assembly, pharmaceutical processing, product and food packaging, quality control roles, and automated surveillance. Astonishingly, advanced security cameras can identify threats independently and alert authorities.

smart camera use implement apply   Caminax camera in us

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Wikipedia - Smart cameras; Machine vision systems


EE Times - Smart camera basics: Matching image sensor, analytics and processor performance


Machine Design - Smart programming for smart cameras


Keyence - Machine Vision Systems Products and Accessories


Teledyne Dalsa - BOA:  Advance Smart Camera Vision System 


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