Measurement is one of the areas where machine vision is often used. The reasons for this are;

• Precise Measurement Capability
• Quick Measurement Capability
• Measuring without touching the product, without causing damage and without removing it from its place
• Recording of results, Reporting
• Automatic measurement without operator
• Ability to operate Automatic error scenarios  in situations where the measured values are outside the limits

 

We have 2 and 3 dimensional precision measurement systems as AKU. We make installations that are tailored to customer needs in terms of sensitivity.To achieve repeatable high sensitivity we use the one or more of the available options like:

• Using the highest resolution camera possible
• Intelligently combining multiple camera images (mosaicking) to get a single large image
• Using a large number of calibrated cameras to look at very large pieces
• Using Zoom or telecentric lens.

In addition to the equipment, we can achieve very high precision measurements with our sub-pixel accuracy software.

Our answer to the frequent question "what is your measurement sevsitivity" is that we do the installation which will offer your sensitivity demands.

High precision measurement with subpixel precision.

 

Measurement applications that we frequently perform:

• Diameter Detection (Inner, Outer Diameter)
• Lenght, Width, Height Measurement
• Burr Detection
• Axis misalignment
• Adhesive (bead, glue, loctite) check for proper application
• Distance to the reference object (deviation from the edge, etc.)
• Distance between objects (distance between wheels etc.)
• Elliptical axis misalignment (miscircularity)

 

Camera calibration may be required to make precise measurements. In addition, the part to be measured may not always be in the same position. In such a case, first of all, the alignment of the part must be performed. In some cases, the measuring points are not placed on the part, the image is rotated to fit the original part (usually the horizontal axis is zero degrees). The image is rotated the result is that each pixel is multiplied by the appropriate transform and scale matrix (not simply rotated around the edge of the image)

Screenshot of our measurement application inwhich Alignment ve Rectification was used

In some applications, working with a Etalon sample is a method. It may be necessary to measure the values of these parts and teach them to the system, and to compare each measured part with the etalon.

As AKU we offer learning options from minimum and maximum pieces of etalon. Under normal circumstances, the system will not require maintenance.; however, it is possible to re-calibrate the system by showing the etalon part to the system at desired intervals.

In some cases, it may be needed to read the values and precision to be measured from a CAD file (dxf or dwg format). As AKU, we can read the cad file and make measurements on the image taken with real camera image.

Comparing measured values loaded from CAD file to camera photo (actual product)

 

Measurement techniques are also used in places where counting is required.

Using a measurement method to find dark areas between cloths will give the most delicate result in a project that counts dishwashers cloths. it is important to be able to make precise 1D measurements in order to be able to deliver pulses to machines that works with a precision of 1 in 100 millimeters,Like a servomotor.

Projection of a gray light distribution in a rectangular area between cloth fabrics in a yellow zone.

Measurement techniques can also work in places where edges or color gradients are not very obvious. In some cases, fuzzy measurement methods are also used in places that are too pale or difficult to see. This method is a more advanced method in which predictive analyzes (as in the Bayes distribution) are used.

in AKU image analysis, we set up advanced measurement systems with our hardware and software solutions for the sensitivities required by the customer.