Vision hardware selection

Bij het kiezen van een lens voor uw industriële camera is het belangrijk dat de lensresolutie overeenkomt met de pixelgrootte van uw industriële camera. De lensresolutie wordt gemeten in lijnparen per millimeter (lp/mm). Dit zorgt voor optimale prestaties van uw industriële camera. In dit artikel wordt het principe van lensresolutie in lijnparen per millimeter uitgelegd en hoe u de compatibiliteit met uw industriële camera kunt berekenen.  De lensresolutie in lp/mm en camera pixelgrootte spelen beiden een belangrijke rol bij digitale beeldvorming. Met het aantal lijnparen per mm kunt u de ruimtelijke resolutie van een camera of lenssysteem meten. De pixelgrootte verwijst naar de fysieke grootte van een enkele pixel op de sensor van een beeldcamera.  Neem contact met ons op als u hulp nodig...

This article explores the basics of polarization and how it can be applied in diverse machine vision applications. Additionally, it places focus on cross-polarization; an advanced technique that enhances image quality by minimizing glare and revealing hidden details. Are you currently working on an application involving surface inspection, experiencing issues with glare or needing some advice on a similar application? We can assist with the selection of the right polarization hardware.  What exactly is polarization in machine vision? Polarization aligns the orientation of light waves towards a specific direction. It offers machine vision systems a unique tool that can extract information from a scene that is invisible when using conventional imaging methods. Polarization-based techniques add a new layer of contrast and detail,...

In the world of machine vision systems, achieving accurate and reproduceable image quality is crucial for tasks such as inspection, measurement, and quality control. Telecentric lenses and telecentric lighting play vital roles in enhancing imaging precision. In this article, we will give a brief introduction to telecentric lenses, then delve into the advantages and disadvantages of telecentric lighting. Additionally, we will explore the parallel backlight as an alternative lighting solution in certain scenarios. hbspt.forms.create({ region: "na1", portalId: "7372172", formId: "fec74822-b8b0-4920-92a8-ce596b5738a6" }); Understanding Telecentric Lenses Telecentric lenses are optical devices designed to minimize perspective errors and provide consistent magnification and perspective across the entire imaging...

Upgrading from a webcam to an industrial machine vision camera brings a lot of benefits in terms of image quality, performance, and functionality. In this article, we will discuss the advantages of using an industrial machine vision camera and how it differs from a webcam. The differences between a webcam and an area scan camera Webcams are common in many applications, from video conferencing to streaming. They are relatively inexpensive and easy to use, but they have limited functionality and lower image quality compared to industrial machine vision cameras. Industrial machine vision cameras are designed for applications that require high-quality images, high-speed imaging, and advanced features. They are widely used in industries such as manufacturing, automation, robotics, and quality control. The purpose of a webcam is to...

When selecting the most suitable Gigabit Ethernet camera for your machine vision project, you should know the differences between industrial cameras with and without Power over Ethernet (PoE). PoE means that the CAT6 network cable simultaneously works as communication and as the power supply for the camera. You can recognise a camera with PoE by the article number with a “-P” at the end. For example, the MER2-630-18GC-P is our 6,3 mega pixel camera with Power over Ethernet, while the MER2-630-18GC has the same image sensor but no Power over Ethernet. Both cameras with PoE and without PoE have their advantages and disadvantages. These are explained below. Why choose for a camera with Power over Ethernet Using a GigE camera with PoE is the most convenient way to power your industrial Gigabit Ethernet camera. You...

Machine vision industrial lights are reliable products which provide constant, non-fluctuating power/light output. They are designed to be used 24/7, providing the best light conditions and machine vision lights are available in many colours to create extra contrast. The machine vision lights have a long-life cycle and therefore the same light with the same specs and output can be purchased for many years. Machine vision lights have a great batch repeatability and minimal led characteristic variations between batches that could cause quality deviations. Industrial lights are powered with constant DC voltage and reliable power sources, therefore there is no flickering. Additionally, it’s possible to over strobe the light, to achieve higher light intensity with the same light (for shorter time). There are several types...

Motion blur can cause the industrial camera to capture unsharp / blurry images. Unsharp images result in inaccurate measurements, bad fault detection or wrong classifications. Motion blur is caused by movement or vibration during the exposure time of the industrial camera. When the object moves for more than 0.5 pixel during the exposure time, the image will have motion blur. To avoid motion blur, the shutter speed must freeze the scene, so the object does not move more than 0.5 pixel during exposure time. This can be done by reducing the exposure time of the camera. However, reducing the exposure time will also make the image darker (as there is less time to capture light). Illustration of the effect of motion blur How to make your setup more light sensitive  If your image is too dark you can check one of...

This article explains how to read barcodes and DMC codes (Datamatrix codes) with the most cost-effective machine vision camera solution. Additionally, we clarify the difference between Barcodes and DMC codes by discussing the pros and cons. We also provide a formula that helps you to calculate the required resolution, and give practical examples reading barcodes and DMC codes. Barcode versus DMC codes The best choice for code reading with industrial machine vision cameras is to use DMC codes instead of Barcodes. DMC codes can be read using lower resolution cameras while using the same field of view as Barcodes. Therefore, when reading DMC codes, you can use cheaper cameras. This also means that with DMC codes you can inspect a bigger field of view with the same hardware and price. DMC code is a matrix of dots, also called a...

Global shutter wordt gebruikt om bewegende objecten vast te leggen, terwijl de Rolling shutter wordt gebruikt om stilstaande beelden vast te leggen. Een Rolling shutter camera is goedkoper, vooral bij resoluties boven de 1,6 Megapixel. Een 12MP Rolling shutter camera, zoals onze MER2-1220-32U3C camera kost ongeveer 200 euro. Een 12MP Global shutter zoals onze ME2P-1230-23U3C camera kost ongeveer 1000 euro. Een Global shutter heeft grotere pixels en een grotere sensor dan een Rolling shutter camera. Hierdoor is een global shutter camera lichtgevoeliger en produceert hij scherpere beelden.  Belichting en sluiter (shutter) De belichtingstijd is de periode tussen het openen en sluiten van de sluiter. Tijdens deze periode val het licht op de...

You might have noticed that some of our cameras are marked as ‘GeT-Cameras Choice’. There are a few reasons why we recommend these cameras, like recommendation for new indesign, the newest image sensors and shorter lead times.   Recommended for new indesigns The main reason why a camera is marked as ‘GeT Cameras Choice’ is because we recommend this camera for your new development. The camera is in an early stage of its product life cycle. Every camera is at least available for 7 years after market introduction. Our track record shows an average availability of 12-15 years. Read more about product life cycle on our machine vision knowledge center: Product life cycle of industrial cameras. Newest image sensors Additionally the image sensors of the cameras are one of the latest generations. Using the...

Gaspar van Elmbt, the managing director of GeT-Cameras, had planned to give a presentation about cost reducing vision hardware design at the UKIVA this month. However, due to the Covid’19 virus this event got cancelled. The organization of this event managed to provide the visitors with all the presentations, included ours, on the ‘presentation hub’.   If you want to learn how to reduce the cost price of your project, make sure to take a look at the presentation in the video below.    

All our industrial cameras have a minimum life cycle of 7 years after market introduction. The graph below shows the typical product life cycle stages of an industrial camera. Market introduction of an industrial camera When a camera is released it has the latest generation sensor. In almost all cases the latest generation sensor is more light senstive and has less noise than previous generation sensors. Therefore a better image quality can be achieved. Check for newer alternatives After 3-7 years, sensor manufacturers will release a new version of the sensor or a sensor from a different brand might have better imaging performance. Therefore during this period it's important to check if there are other camera types available that have a newer image sensor. EOL Notification Unfortunately cameras do go End of Life...

Machine vision camera Interface whitepaper This article will provide a deeper inside in what the benefits and downsides are of each type of machine vision camera interface, so you can select the right interface for your machine vision application. It has to be noted that GeT cameras only supplies USB 2.0 , USB 3.0 , GigE , 5GigE and 10GigE machine vision cameras and the article will mainly be focused on these five industrial machine vision interfaces. However in the table below we have incorporated also other interfaces to make the overview of industrial machine vision camera interfaces complete.     USB2 USB3 FireWire GigE CameraLink Coaxpress 5GigE...

Arm embedded platforms are very popular for embedded vision. Many of these platforms have a USB2, USB3 and or GigE ethernet port. Our USB3 and GigE Vision Cameras work with these ARM embedded platforms. The Raspberry Pi, that has a USB2 port, even works with our USB3 cameras on reduced frame-rate . Which embedded board to select with a USB3 Vision Camera There are many embedded boards available in the market that work with our USB3 Vision Cameras. The following ARM platforms were extensively tested with our machine vision cameras: NVIDIA Jetson TX1/TX2 NVIDIA Tegra TK1 Toradex Apalis TK1 on Ixora Carrier Board Raspberry Pi 3B, incl. support of the camera module. However other popular embedded boards are: - Odroid XU4 - NanoPi M4 - NVIDIA Jetson Nano - Firefly The Raspberry Pi is prefered...

Daheng Imaging is familliar in the industrial polarized camera   segment by implementing the Sony-IMX250MZR monochrome image-sensor . Recently the IMX264MZR has also been added to the portfolio. The Industrial polarization camera   systems are able to capture information which a normal line or area industrial camera is not able to obtain. A polarization camera conducts a two-dimensional analysis. It measures both the degree and direction of the polarization of the light. As a result the final image has almost none reflections from external lightsources. A polarized camera is ideal for applications like the inspection of glossy products and transparent products. Standard Machine vision camera versus polarized camera The following examples show on the left hand side an image captured with a standard machine vision...

USB3 Vision standard is an imaging interface standard for industrial USB3 vision cameras. The majority of camera manufacturers have already adopted this standard, and the number of compatible accessories is growing quickly. A big advantage of the USB3 interface is that, any of the PCs, laptops and smartphones have a USB 3.0 interface built in nowadays. In the field of vision technology, USB 3.0 is also replacing dated interfaces such as the FireWire, Cameralink and USB2.0. The speed of the USB3 vision camera interface The USB 3.0 interface, also known as Super-Speed USB, is the following line of the well-known plug and play Universal Serial Bus spec that builds on the assets of USB 2.0 and washed out its weaknesses. The operative bandwidth accessible with the use of USB 3.0 when transferring bulks of data totals 350-450 MB/s,...