Tuesday, 10 January 2017

Putting Thread to The Test

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The hemstitch sewing machine was invented in 1893 by Karl Friedrich Gegauf. In 1932, his son Fritz introduced the first household sewing machine and the inventions and patents from Bernina have kept coming ever since. The company, based in Steckborn, Switzerland, stands for the highest quality and durability: BERNINA sewing machines must therefore meet very high standards. They must be fast, low vibration, quiet and wear-resistant. They should also stop with high precision, execute moves in time and repeat them predictably.

The mechanical challenges of a sewing machine are complex: First, a sewing machine is composed of a number of vibrating parts that mutually influence each other. The vibrations are often associated with high imbalances due to the nature of the construction. When vibration frequencies are high, even the smallest deviations at the micro-level can substantially affect the functionality of a sewing machine. Also, depending on the material used, the upper and lower thread may require different and often unpredictable movements, sometimes in the tightest of spaces.

Facilitating a diverse range of tests with the right camera

 

To analyze the problems arising from this, BERNINA AG has to apply accurate, efficient and reliable measuring instruments. These include the MotionBLITZ EoSens® mini2 by Mikrotron. They started using the high-speed camera in the construction and development department in 2009. Mr. Durville, head of the department, and Mr. Schwyn, test engineer at BERNINA AG, were particularly impressed by their flexibility. “The camera has quickly established itself as a flexible tool for many testing purposes,“ says Mr. Schwyn. It records the movement of the thread, but also monitors components operating under spring pressure or the needle-looper movement and checks time sequences. The resolution and speed of the camera are adjustable. At a resolution of 1,696 × 1,710 pixels (3 megapixels), the camera takes 523 images per second. The images let you see every detail. Higher frame rates of up to 200,000 frames per second are possible at a lower resolution.

Recording the movement of the thread

 

A special challenge in the development of a sewing machine is the controlled movement of the thread: Since commercially available threads come with a variety of surfaces, thicknesses, resistances and flexural properties, it is difficult to keep the grain line under control. In addition, the operational parameters may run from a speed of 2 m/sec to being completely paused. In the latter case, there is a danger that the thread may become hooked on machine components or slip out of the thread guide.

For a regular and high-quality seam, it is extremely important that the slip motion of the thread remain under control at all times and everywhere. The MotionBLITZ EoSens® mini2 by Mikrotron makes the movement of the thread visible to the human eye, meaning the design process can be brought to bear on it.

Monitoring the thread guide

 

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High-speed camera MotionBLITZ EoSens® mini2 - Monitoring the thread guide
Thanks to the high-speed imaging of the MotionBLITZ EoSens® mini2 it is possible to check whether the thread is moving in a controlled way or if the alternations of tension and release are too great. With an image size of 1,696 × 1,710 pixels and a frame rate of 512 frames/second, the camera delivers high-resolution and accurate shots.

Monitoring components under spring pressure


In a sewing machine, spring pressure enables many parts to stay in position or allows them to perform the necessary movements without hindrance. For this, one usually alternates between high and low pressure. High pressure leads to high friction and wear, while low pressure goes hand in hand with low reliability. The high-speed camera MotionBLITZ EoSens® mini2 helps manufacturers to find the right spring design faster and more effectively.

High Speed Camera Distributor in India

 

Monitoring the spring pressure

 

MotionBLITZ EoSens® mini2 - Monitoring the spring pressure

The MotionBLITZ EoSens® mini2 is used to control the spring pressure of two components. A high frame rate of 3,668 frames/second was chosen for the image. A resolution of 528 × 652 pixels was sufficient to document the interaction of the two components in Detail.

Analyzing the sensitive needle-looper movement

 

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The central piece of a sewing machine is the so-called looper. It detects the thread, which is “offered” to it by the needle. Only a few hundredths of a millimeter determine whether the thread is detected by the looper or not, i.e., whether a stitch is created or not. The needle is guided from the top of the machine; the looper is guided from the bottom of a sewing machine.

The long mechanical lever arms, the high speed and the many moving parts cause vibrations that threaten this very important function. Here the high-speed camera MotionBLITZ EoSens® mini2 also delivers precision.

 

Monitoring the needle-looper movement

 

The MotionBLITZ EoSens® mini2 allows various high-speed recordings of the sensitive interaction between needle and looper.

 

Checking temporal sequences

 

A sewing machine can only fulfill its task if the temporal processes are executed with absolute precision and accuracy
  • The fabric may move only as long as the needle is not inserted.
  • The needle should only execute the ZZ movement if it is not inserted in the fabric.
  • The servomotor for the fabric transport length should only move when its not transporting.
  • The looper must then be exactly on the spot when the needle forms a small thread loop.




To Know More About To Know More About High Speed Camera Distributor in India Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com


Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com

Source - mikrotron.de

Tuesday, 3 January 2017

Basler's new proprietary feature set: PGI


http://mvrpl.com

Several of our newest camera models come with our powerful in-camera image optimization technology already built in: The proprietary PGI feature set enhances your images at the full speed of your camera. PGI is comprised of a unique combination of 5x5 debayering, color-anti-aliasing, denoising and improved sharpness.

With PGI, your camera will produce better images than ever, without putting additional load on your processor. The PGI feature set is available in dart and pulse color cameras and in all ace color camera models with sensors from the Sony Pregius series or PYTHON sensors from ON Semiconductor.
Harness the full power of pylon and activate the PGI features or change the settings for individual PGI components until you've achieved the optimal results. 

The following cameras possess the PGI feature set:
  • Basler dart camera series
  • Basler pulse camera series
  • Basler ace cameras with Sony IMX174, IMX 249 or PYTHON sensors

Details on PGI

PGI is comprised of a combination of various features. Learn here about the individual features of PGI.

5x5 Debayering

The term debayering generally describes an algorithm that calculates the color image from the image sensor data. However, as the image sensor does not provide color values for each color in each individual pixel, the algorithm must interpolate to determine that information. Cameras typically offer 2x2 debayering, whereby the two closest pixels are used to calculate the actual color of the image. This can lead in some cases to uneven edges between colors and other artifacts. The 5x5 debayering used in the PGI feature set delivers cleaner transitions between colors and eliminates artifacts altogether.

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At the same time, the optimized debayering also assists with noise suppression.

Color-Anti-Aliasing

Due to the limits of camera resolution, the use of the debayering algorithms can easily lead to color distortion in the captured images. In practical terms, even colorless structures suddenly appear to have color. The aforementioned resolution limits allow color cameras using debayering to capture only specific colors, which in turn produces false interpolation values. PGI uses an expanded informational range during debayering while also simultaneously correcting the incorrect colors.

Basler Machine Vision Camera Distributor in India

Denoising

Noise is a phenomenon that occurs in all cameras, and arises from a variety of causes (photon shot noise, sensor noise). Color cameras must not only deal with gray noise but also with color noise caused and reinforced by the sequencing of multiple calculation steps and interpolation. PGI accounts for and avoids this type of noise formation from the start through careful linking and parallelization of calculation operations. In addition, active noise filtering can be applied to further reduce the noise level, which in turn further enhances the image.

Improved Sharpness

Basler Machine Vision Camera Distributor in India

Color cameras often struggle to depict particularly fine or sharp structures. The results are aliasing effects or reduced image sharpness. This can be traced back to the interpolation algorithms, known as debayering for cameras with Bayer pattern. Because its interpolation algorithm is adapted for the image structure, the PGI feature set delivers significantly improved sharpness, with the option to pursue further improvement via a supplemental sharpness factor. These enhancements are particularly helpful for applications requiring strong sharpness, such as applications using color cameras to detect and process letters and numbers (such asANPR for traffic applications) or other fine or sharp-edged structures (such as barcodes).




To Know More About To Know More About Basler Machine Vision Camera Distributor in India Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com

 

Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com

Source - baslerweb.com

 

 

 

Tuesday, 27 December 2016

Image Processing Automates Eyeglass Fitting for Rodenstock

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Imagine that you wear varifocal glasses and need new ones. You go to an optometrist and, without time-consuming adaptations, measuring or trying on frame after frame, you look at yourself in a mirror and - voila! - your chosen frame is on your nose.

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Fig. 1: In a calibrated system, the geometric relationship of the coordinate systems of the center camera and the side camera are determined by triangulation.

Machine Vision Companies in India
Fig. 2. The pupils can be found by the image processing software, which uses the three reflections of the illumination around the pupil. After the pupils are found, the position crosses are set by the software.

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Fig. 3: The coordinates from the camera that takes the front image are translated and projected onto the image taken by the other camera. The optometrist can then finalize the position of the pupil center cross mark and the cross marks at the glasses.

Automatic calculation of eyeglass frames and lenses enables customized fit 

International eyeglass manufacturer Rodenstock GmbH of Munich has developed an optometrist service terminal that can do just that. It enables automatic calculation of eyeglass frames and lenses customized to fit an individual's face - all in about a second. 

The terminal, called the ImpressionIST, performs several tasks. It provides interactive information about the eyeglasses, presents frames from which the customer can choose, calculates the ideal dimensions of the glasses via a three-dimensional video system, and offers consultation regarding the quality of the glasses. The technical requirements of the system are targeted to the aesthetic aspects of choosing glasses.

Exacting images

The patent-pending 3D video system, which measures the customer's face, must make the fitting procedure as easy as possible. Thus, the 3D measurements are done with the customer looking into a semitrans-parent mirror that is 75 cm away. The imaging system, mounted behind the mirror, is hidden from view. It uses two cameras from Allied Vision Technologies to take images simultaneously. After the measurements are concluded, the optometrist can go over the images with or without the customer.

One camera captures the face from the front and the other, from below and the side (Figure 1). These create aesthetically pleasing images, while being suitable for analysis.

The images are processed based on the software library HALCON from MVTec Software GmbH of Munich. The software delivers the real-world 3D coordinates necessary for manufacturing the frames and lenses. By acquiring a calibration plate before the first start-up of the ImpressionIST, inner and outer camera parameters can be appointed to deliver the coordinates.

The analysis begins with a position cross mark placed at each pupil's center on the image of the front of the face (Figure 2). The software uses information about the camera position, illumination and reflection from the cornea to calculate the centers.

To make measuring as comfortable as possible and to ensure the customer's elemental posture during image acquisition, no flash is used. For this reason, three 11-W lamps from Osram are integrated into the system, arranged to find the pupils' centers from the reflections on the corneas. The showroom should be illuminated with diffuse light.

The final position can be adjusted by the optometrist. The brims of the glasses are computed by edge extracting each glass's front. Other cross marks are positioned at the point where the extensions of the straight lines through the pupils' cross marks meet the brims. These marks also can be adjusted. The same positions are determined for the image from the other camera, and the already adjusted cross marks from the front image are projected onto it (Figure 3). Then, the cross marks can be automatically transferred into each other.

For Rodenstock, it was important that the optometrist maintain the ability to adjust the positioning, although the image processing software could do it. After the optometrist approves the positioning, the 3D coordinates of the corresponding cross marks are computed, taking the calibration into consideration.

The computation delivers all the parameters needed to manufacture the frames, including monocular pupil and corneal vertex distance, pantoscopic tilt, face-form angle, fitting point height, decentration (of the fitting point), boxed data (lens width and height), distance between lenses, frame shape and optimized lens diameter. The results are documented in a hard copy that includes illustrating figures and that is optimized to allow grinding of the lenses.

Rodenstock's tests of the system by Rodenstock have found that the measurements are accurate and repeatable, depending on the customer's ability to repeat a position. The reproducibility using the system was 1.5 times higher than when using a free distal view. 

The system is currently available only for Rodenstock consultant optometrists.




To Know More About To Know More About Machine Vision System, India Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com

 

Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com

 



Source - mvtec.com

Tuesday, 20 December 2016

Switching from CCD to CMOS Cameras

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Sony has announced the closure of its CCD sensor factory. CCD camera users are now confronted with questions around switching to CMOS technology and the availability of current CCD camera models.
For us, the move toward CMOS technology doesnt come as a surprise. We started our preparations some time ago and can offer a broad portfolio of CMOS products. 

Sony has scheduled the last delivery of the CCD sensors that are integrated into Basler cameras for the end of 2026. Basler will ensure a smooth transition from current Basler products with CCD sensors to CMOS sensor-based Basler products.
 
We have put together a list of answers to the most relevant questions around this transition and around suitable successors for your CCD sensor-based Basler ace camera.

CCDs been discontinued. Now what?

Experience together with Steve what Sonys CCD discontinuation announcement means and how you can deal with it.


FAQs

When should I begin switching from CCD to CMOS?
In general, you could start any time. Switching quickly will let you benefit from a performance increase in your application and from lower camera costs. Therefore, a fast change makes sense. On the other hand, there is no immediate rush if you are using CCD-based cameras. They will be available for many years to come. We recommend taking the time to run the calculations on your application, to decide which option would be more advantageous.
What do I have to consider when switching?
Relatively little. You should not have any trouble finding a camera with a suitable CMOS sensor. For an easy switch, choose a CMOS sensor with the same optical format as your current CCD cameras, and you all only have to perform minimal adjustments to your system design. Things are also kept simple if you stay with your standard interface, Gigabit Ethernet. Basler offers all new CMOS sensors within the 29 mm x 29 mm housing of its ace models which allows for easy replacement of nearly all existing camera designs. It also brings along improved performance in replacement scenarios of analog FireWire cameras, where space limits are a crucial concern.
What is important when integrating the latest CMOS-based cameras?
Integrating a CMOS camera to replace CCD sensors is simpler than expected, especially when you choose standard-compliant hardware and software. Because camera manufacturers take care of the entire sensor integration including image quality optimization, all you need to do when choosing the right CMOS camera is to:
  • Determine the correct resolution of the camera: The required resolution depends on the details you need to make visible in your images.
  • Define the required camera interface: The choice of an interface depends on the required cable length, bandwidth, necessary frame rates and real-time capabilities and PC hardware availability. Our Interface Advisor helps you find the best interface for your application.
  • Choose lens and lighting: Changing the sensor format also involves changing the lens. Our Lens Selector makes finding a new lens easy. Lighting must only be adjusted if the sensitivity of the new sensor is different from the previous one.
  • Integration effort for software and camera control: Cameras complying with common standards such as GenICam, for example, or interface standards like USB3 Vision or GigE Vision, offer uncomplicated integration.
Which CMOS successors does Baslers portfolio offer today?
Basler has anticipated the trend towards CMOS sensor technology in industrial cameras early on and offers a broad product portfolio of CMOS cameras with sensors from various manufacturers. Just recently, it equipped two ace GigE and two ace USB 3.0 models with Sonys IMX174 CMOS sensor. With a resolution of 2.3 MP and frame rates of 50 fps (GigE) and 155 fps (USB 3.0), respectively, this powerful sensor is a recommended choice for demanding applications in the fields of traffic, microscopy and medicine.




To Know More About To Know More About Basler Camera Distributor, India Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com


Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com

Source - baslerweb.com

Monday, 19 December 2016

USB 3.0 as an Alternative to Camera Link – Tips for Switching

http://mvrpl.com

The USB3 Vision Standard and associated USB 3.0 interface have been on the market for some time now. Since the introduction of this interface technology, a growing number of users have been considering whether and how to switch from their old Camera Link cameras to new USB 3.0 models. 

Our new White Paper "USB 3.0 as an Alternative to Camera Link – Key Factors When Switching Camera Interfaces" explains reasons for switching from Camera Link to USB 3.0 and gives pointers on the factors that matter most.


In many situations, USB 3.0 is a suitable replacement for Camera Link, with potential fields of applications ranging from food sorting and semiconductor or printed material inspections to the pharmaceutical industry. This White Paper shows the benefits offered by USB 3.0 for the individual applications. 

General explanations of the USB3 Vision Standard and the USB 3.0 interface can be found in our Vision Campus article "USB 3.0 – The camera Interface of the Future (?)" and in our White Paper "USB 3.0 Interface and USB3 Vision Standard – Data, Facts, Setup and Migrating to USB 3.0." Our White Paper "Setting Up a Stable USB 3.0 Camera System" details how to set up this kind of system.




To Know More About Basler Camera Distributor, India, Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com

 

Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com

 

Source - baslerweb.com

What is Embedded Vision? – New Vision Campus Video

http://mvrpl.com

If you think industrial cameras are roughly the size of a carton of milk and their computers are big enough to work as chairs, you're a little behind the times. Machine Vision system components were as big a few years ago, but not any more.

Over time PCs have shrunk, in some cases down to no more than a compact, application-specific processing board. The cameras have gotten smaller, too and are now often available without a housing – allowing them to be integrated into a larger system. 



These two trends toward miniaturization of PCs and the camera make it possible for vision systems to be produced affordably and for highly specific applications. A system of this kind is referred to as an embedded vision system.

Want to find out more about this topic? Then watch the new video in the Vision Campus on What is Embedded Vision? It contains more in-depth information, such as how an embedded vision system is constructed, its benefits and where these systems are used.

The Vision Campus contains detailed articles and videos on Machine Vision and on Vision technology in general. We explain for example why it's important to choose the right lighting for your image processing task and why CMOS sensors are the technology of the future – presented in text and video form. See for yourself!




To Know More About Basler Camera Distributor, India, Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com

 

Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com

 


Source - baslerweb.com

Saturday, 17 December 2016

Basler Goes to SPIE Photonics West

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The Basler team is going to San Francisco for the SPIE Photonics West Exhibition. Right on the first day of the show, on January 31, Scott Graber, Senior Applications Engineer at Basler, Inc., will host a demo session. He will show how 5×5 debayering, anti-aliasing, denoising and improved sharpness make a difference in image quality. The session will start at 11:30 in the Demo Area in Hall ABC South

At the booth # 4464 Basler will show its latest products, the ace with the IMX252 sensor and the PGI feature set for in-camera image optimization, the Basler Time-Of-Flight Camera and theembedded vision evaluation kit – PowerPack dart USB for Evaluation. 





To Know More About Basler Camera Distributor, India, Contact Menzel Vision and Robotics Pvt Ltd at (+ 91) 22 67993158 or Email us at info@mvrpl.com

 

Contact Details



Address: 4, A-Wing, Bezzola Complex,
Sion Trombay Road, Chembur

400071 Mumbai, India
Tel:(+91) 22 67993158
Fax: (+91) 22 67993159
Mobile:+91 9323786005 / 9820143131
E-mail: info@mvrpl.com
 

 


Source - baslerweb.com