Tuesday 27 December 2016

Image Processing Automates Eyeglass Fitting for Rodenstock

http://mvrpl.com

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.

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

http://mvrpl.com

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

http://mvrpl.com

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



Y-Cable for Use of All I/Os on Basler ace Cameras with the Latest CMOS Sensors without Interferences

http://mvrpl.com

The ace GigE cameras with Sony’s IMX sensors and the PYTHON sensors from ON Semiconductor and all ace USB 3.0 cameras have two I/O types: direct coupled GPIO and opto-coupled I/O. Our new Y-cable allows you to use both types simultaneously without the opto-coupled I/Os interfering with the GPIO signals due to crosstalk. There are two separate wires to split both I/O types. The two wires on the Y-cable have different colors to distinguish between them (GPIO = yellow, opto-I/O = blue).The cables are 10 meters long with open ends so that they can be shortened individually to fit your application.

For all ace GigE cameras (with/without GPIO) the GPIO cable also supplies power to the camera. This design allows a separate wiring of trigger signal and power. 

 

 

 

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