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Vision Systems Questions? Ask the Experts

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Category: Vision Systems

Hi, I am doing my research project on a vision inspection QC (quality control). For a research purpose i need to know about present limitation , future problems of vision and imaging technology. I also need to know about what will be future topics / industry for QC using vision and imaging technology. Please, give guidance regarding this, it will be very helpful. THANKS!

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what is future requirements/future concept from vision and imaging technology?

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aside from Golden unit, what is the best way to correlate vision systems?

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Hi, I am looking for inspection system which can works for my 2pc alluminium can line to detect the inside defects on the can. Please suggest any ideas

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Can you suggest a book or articles for those with no technical that explains how computer vision systems work?

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We’re looking for a solution to photograph bearings and shafts 7 and 3mm dia respectively after applying grease or adhesive during automated manufacturing. Photographs are close-ups (macros) and require focus stacking. Results are stored for later use in order to diagnose end of line tester and others.

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How do I hire a color science expert for either consulting or full-time employment?

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Hello, Looking to detect a label(the borders) on a brown box in motion. Any suggestions as to which firm can give us a solution to that ?

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What are some imaging applications in plant propagation?

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Hi, I'm researching different machine vision solutions for industrial QA (defect detection). Where can I find a list of the major and minor solutions providers offering machine vision solutions for defect detection? Thanks!

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Which machine vision systems can be used to affordably accomplish these two objectives: a) Simply detect the presence of a car within a defined space b) Determine the exact location and 3D dimension (length, width, and height) of the car within that space. Bear in mind that is objective b) the solution must detect small projections from the car such as trailer hitches off the back, mirrors off the sides, and roof racks & antennae off the roof. The distance may be from as far as 12' away and it is certainly possible to use multiple cameras to view the car from multiple angles. The solution would need to communicate with a PLC system. We currently use lasers, but they are expensive, so I am wondering if cameras would be more affordable and equally reliable.

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I am looking for a low cost solution to sort golf balls by make and model. We intend to use OCR as part of this solution. Since most ball manufacturers use alpha/numeric model numbers and logos. The challenge is getting the right orientation of text and logo for reading. Is it possible to read in multiple orientation?

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I am a concrete construction quality professional active in many industry associations, but I know very little about image capture and analysis. I am looking for a combination of hardware and software to measure voids in concrete surfaces after the formwork is removed. Our industry currently has only subjective measurement of surface to void ratios and color uniformity; both important aesthetic attributes. I would like to build a device to capture images under controlled lighting and reflectance, and then use software to determine void / surface ratio and color uniformity. Several white papers have been written on this subject using Matlab or ImageJ for analysis of greyscale images, but the devil appears to be in the details - controlling variables.

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Can you tell me how to eliminate modification of ambiental light on my camera image acquisition? I have a B&W cognex camera with integrated red led light and I want to find a simple area of a black blob, but ambiental light is changing and my blob is changing his brightness.

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Hello - I need to image a relatively large area (1mx1m) with about 0.5mm resolution. I think this means that the camera/lens system should be no less than about 4 megapixel, but of course higher resolution is preferred. I also need to stand the camera off the part by about 2m. The application is indoors where the lighting can be controlled reasonably well. It can be considered a static application - speed is not a concern. This is essentially a metrology problem where I am trying to measure a roughly 5mm wide x 1m long feature on the part. Are there industrial camera solutions with this type of resolution?

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I am looking for a system that would inventory similar wooden products and identify them according to distinguishing features - such as wood grain. Any products out there that would work on this scale?

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Hi, we are working with a sort of complex system with 8 GigE Allied Vision cameras running in 12Bit PixelFormat mode connected to a Switch with a 10Gig uplink to a virtual machine (ESXi) on which our software grabs the images. All Cameras are only used to take single frames, no video. At least 4 cameras are triggered by the same hardware trigger to grab a frame of an object. In the worst case even 8 Cameras may grab at the same time. In the last time we were facing problems with incomplete frames. We only have one try to grab the frame since the object will moving away. We tried with different parameters like PacketSize of 9K and Receive Buffers in the hardware adapters and virtual network adapters but this won't fix the problem for us. The switch itself does not report any errors and the network traffic seems not to be at any limit. It seems like the VM is having some trouble here. Using Wireshark to take a look at incoming GVSP Packets and outgoing GVCP Packets indicates that Packets are missing on the receiving side and requested for retransmission but only up to some limit. We can see that for ~200ms not a single GVSP Packet is received, like a short 'hickup'. What we want is to get this as robust as possible since we have up to 10 seconds before the next object triggers a new grab. So we have plenty of time to wait for the frames if only possible by the SDK. From my understanding several GVSP Parameters exist capable to be tuned that way but these are either not implemented in the SDK or some internal timeouts make it impossible. Has anyone experience with such a system and the GVSP protocol? Sidenote: We have set the camera bandwidths down to 10 Mb/s but this seems not to solve the problem. Looks like the problems lays in triggering multiple cameras at exactly the same time. Best regards

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I am working on outdoor system for detecting fast moving objects. I need an inexpensive solution - 4 cameras shooting @ ~40 fps, 2MP, GIGE, frame level synchronization - in this case minimum 25 ms accuracy (1/40). I need roughly about 100 degrees H viewing angle per camera. The idea is to detect the objects and recreate their positions in X-Y-Z. Does anyone have any idea about the hardware setup? Its really tricky to find the right combination between sensor and optics to achieve the desired FOV at reasonable price (camera + housing + lenses should not be more than 500-600 USD). Another thing is the the synchronization, I want it to be as simple as possible, no additional trigger boxes and cables, so the sync must be done via PTP. The problem is not many cameras support PTP which makes the choice even harder or impossible.

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I've been working with laser profiling sensors to generate 3D images and inspecting them with vision tools. Usually these devices only give you what is called a height image. Using this image I can measure almost anything I want but I cannot read a 2D code printed on an object or inspect the color/grayscale value of the same object. Is there a device that can deliver both Height Image and "normal image" (similar to one from a camera) or should I just use a profile sensor and camera at the same time?

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I currently have an outdoor vision system that detects logs on a stepfeeder. I am using a Cognex insight 7050 with 3.5mm focal length lens to provide me with a FOV of around 3 meters. This works well except I am having problems with sunlight causing glare and shadows that either causes the camera to false detect, or not detect at all. Could anyone recommend lighting/lens/filters that may help?

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