Example: Distance (D) between 2 points with measuring accuracy (d) of 0.05 mm. Object size X = 48 mm (monochrome sensor, because color is not relevant here)

In the task, the distance (D) between the centers of both holes is determined with the measurement accuracy (d). Using these values, we then determine the parameter for selecting the right image sensor and camera.

The machine vision and industrial camera market is offering thousands of models with different resolutions, sizes, speeds, colors, interfaces, prices, etc. So, how do you choose? Let’s go through 5 simple steps which will ensure easy selection of the right camera for your application.

Note: Monochrome or color?Color sensors use a Bayer color filter, which allows only one basic color to reach each pixel. The missing colors are determined using interpolation of the neighboring pixels. Monochrome sensors are twice as light sensitive as color sensors and lead to a sharper image by acquiring more details within the same number of pixels. For this reason, monochrome sensors are recommended if no color information is needed.

Contrast refers to the difference in color or light intensity between an object and its background, enhancing visibility. A well-functioning microscope requires ...

We looked at the available image sensors and the closest is a model with resolution 3092 x 2080 => 6.4 megapixel image sensor.

For a correct calculation, it is necessary to check the resolution, not only in the horizontal but also in the vertical axis.

Note: The newest rolling shutter sensors have a feature called global reset mode, which starts the exposure of all rows simultaneously and the reset of each row is released simultaneously, also. However, the readout of the lines is equal to the readout of the rolling shutter: line by line.

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Single component, UV curing adhesive used for temporary bonding of lenses to metal polishing mounts or where bonded components need to be easily separated in ...

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Object size (O) can be describe horizontally as well as vertically. Some of sensors are square and this problem is eliminated 😊

Vision code readers provide fast read rates, detect codes from multiple directions, read multiple codes simultaneously, and store extensive information

The main function of led light diffuser film is to reduce light transmission by scattering the light, thereby producing an even light distribution. These films ...

30mm lengthin cm

Small, handy and cost-effective, USB 2.0 industrial cameras have become integral parts in the area of medicine and microscopy. You can get a wide range of different variants, including with or without housings, as board-level or single-board, or with or without digital I/Os.

Rolling shutter: Exposes the motive line-by-line. This procedure results in a time delay for each acquired line. Thus, moving objects are displayed blurrily in the resulting motive through the generated “object time offset” (compare to the image).

Each type of application needs a different size of information to solve. This is differentiated by the minimum number of pixels. Let's again use monochrome options.

Smart cameras and industrial cameras and the two distinct approaches in machine vision that vary in solutions and price ranges

Established interface to GenICam. GenICam abstracts the access to the camera features for the user. The features are standardized (name and behavior) by the standard feature naming convention (SFNC). Additionally, it is possible to create specific features in addition to the SFNC to differentiate from other vendors (quality of implementation). In contrast to GigE Vision, this time the mechanics (e.g. lockable cable connectors) are part of the standard which leads to a more robust interface.

Example: The measuring needs 3 pixels for the necessary accuracy (object detail size d). As necessary accuracy (d) which is 0.05 mm in this example, is imaged on 3 pixels.

Vision code readers provide fast read rates, detect codes from multiple directions, read multiple codes simultaneously, and store extensive information

Description. Compact and easy to use or take with you. Great for crafters as this can be used hands-free. Fold in various positions for that great hands on or ...

Note: Each characteristic or application type presupposes a minimum number of pixels. It avoids the loss of information through sampling blurs.

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30mm lengthin inches

This means the bottom lines of the sensor will be exposed to light longer! For this reason, this mode will only make sense, if there is no extraneous light and the flash duration is shorter or equal to the exposure time.

For easier explanation, you can choose the option of solving the measurement task. However, the basic functionality can be used for any other applications.

The Modulation Transfer Function (MTF) is an important tool to quantify the overall imaging performance of a system. MTF is a function of spatial frequency (v), ...

Without standards every manufacturer does their own thing and many advantages customers learned to love with the GigE Vision standard would be lost. Like GigE Vision, USB3 Vision also defines:

A twip, which means twentieth of a point is a typographical measurement, defined as 1/20 of a typographical point. One twip is 1/1440 inch or 17.639 µm when ...

I believe that these five points will help you choose the most suitable camera. Are you still unclear? Do not hesitate to contact us or contact me directly: I will be happy to consult your project, needs or any questions.

Learn the seven main lighting techniques for machine vision applications, focusing on image stability through lighting, lensing, and material handling

We already defined the object size as well as resolution accuracy. As a next step, we are going to define resolution of the camera. It is simple formula to calculate the image sensor.

Later versions of Zeiss polarizing objectives have cone-shaped ends and narrow serrated ring bands, with red tube lettering. My 50x objective is the old style, ...

Pincushion Distortion. It's the opposite of barrel distortion. It happens mostly with telephoto lenses and happens due to image magnification towards the edges ...

Smart cameras and industrial cameras and the two distinct approaches in machine vision that vary in solutions and price ranges

It is always necessary to start with the size of the scanned object (X, Y), or you can determine the smallest possible value (d) that you want to distinguish with the camera.