Our durable calibration targets are printed with vibrant UV-cured ink and available in various materials and finishes. You can choose from 3mm or 6mm aluminum composite material (ACM) or 2mm, 3mm, 6mm, or 12mm polyurethane with a natural matte finish. These target boards are lightweight, rigid, weatherproof, and long-lasting, perfect for indoor and outdoor display. We are thrilled to introduce our new "Ultra Matte" Anti-reflective Print Option with White Ink. You can upload your file or click "Design My Pattern" to get started! Read More
Camera Calibration Target Boards
Any Custom Size or Shape - Made in the USA - Same Day Production
High-precision calibration targets for machine & computer vision applications
What Are Calibration Targets?
Calibration targets are highly accurate, robust sign boards designed for the calibration process of imaging systems for machine and computer vision applications. Our calibration targets are produced using two types of materials: ACM (Dibond) and Polyurethane. Both materials are lightweight, ultra-flat, rigid, and highly durable, making them suitable for both indoor and outdoor use. ACM is composed of two metal panels that are sandwiched together with a black polyurethane core. It is available in 3mm or 6mm thicknesses. Polyurethane, on the other hand, is a solid compressed foam board that has an ultra-matte surface and is available in 3mm, 6mm, and 12mm thicknesses. It is best used in environments with high lighting or when vision systems includes various light sources. The ultra-matte surface finish of polyurethane makes it easier to detect in machine vision pipelines. Finishing options for our calibration targets include the following:
- Rounded corners (ease of use when handling larger targets).
- Special cuts (cut-to-shape).
- Single or double-sided printing.
We offer a wide range of custom sizes to accommodate large or small fields of view with a highly accurate manufacturing tolerance of .004". We digitally print your target at 1,200DPI with vibrant UV inks using direct printing process. The UV inks produces smooth, rich, authentic colors that are weather-resistant and will stand the test of time.
Design your custom pattern to get started, and choose from grid types, including Checkerboard and Apriltag. Make it unique by configuring each detail and option that suits your needs best. If you have a custom calibration pattern, click "Get Started" to upload your design. After that, we will print, cut, pack, and ship your calibration targets carefully so they safely arrive in pristine condition, ready to aid you in calibrating your imaging systems.
Calibration Target Features
Vibrant UV Direct Printing
It is ideal for calibrating machine vision, providing optical performance featuring sharp, crisp colors paired with resistance to fading that lasts long in harsh environments.
Precision Manufactured
Knowing that vision systems rely on accurate components, we've automated our facilities' cutting process to ensure your target features the most accurate results.
Custom Shapes, Drill Holes & More
Our "Special" cut option features fully modify board shapes. Providing unique custom shapes, special drill hole sizes, and placement. An excellent finish option to create low-cost custom test targets or specialized parts for R&D. Learn More
Wide Range of Sizes
Order any custom size for Small or Large fields of views, from 4"x4" up to 46"x94", with a manufacturing tolerance of .004"+ or - in either direction.
Rounded Corners
Provides safety featuring sleek, professionally machined rounded edges to the corners of your target.
ACM - Technical Material Specs
- Material Thickness: 3mm, 6mm
- Panel Type: Aluminium Composite Panel
- Surface: Machined for an extremely smooth surface free from imperfections
- Temperature Range: from -50°C to +80°C
- Fire Classification: CLASS A - P/0/1
- Physical Weight: 0.78125 lbs per ft.² (3mm), 1.3125 lbs per ft.² (6mm)
- Finish Option: Includes an enhanced anti-reflective finish - Ultra Matte - (white ink printed edge to edge)
- Manufacturing Tolerance: .004" + or - in either direction.
Polyurethane - Technical Material Specs
- Material Thickness: 2mm, 3mm, 6mm, 12mm
- Panel Type: Polyurethane Panel
- Surface: Compressed foam that may have imperfections
- Temperature Range: from -29°C to 71°C
- Fire Classification: E-84 Class 1
- Physical Weight: 0.296 lbs per ft.², 0.334 lbs per ft.², 0.685 lbs per ft.², 1.187 lbs per ft.²
- Finish: Natural Matte - (material is matte)
- Manufacturing Tolerance: .004" + or - in either direction.
Getting Started on Your Target Boards
You will first need a pattern to get started. You can use our pattern generator to complete your order or upload your own design. You'll choose your preferred finish options throughout checkout, enter each quantity, and complete your order!
Pattern Generator
Choose from multiple grid types and control your calibration board details, such as board height, width, the number of rows, columns, spacing, marker, tag size, and more. Grid types include:
- Checkerboard
- AprilTag
Upload Your Own Design
To begin your order with your own design. Click the "Upload My Design" button below, drag all files into the "File Uploader" and proceed to update your board dimensions and finish options. View and approve your online proofs, and wait for delivery! View File Requirements & Helpful Ordering Tips.
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Accepted file formats: .PDF, .AI, .EPS, and high-resolution full-scale .tiff, .tif, .jpg, .jpeg, and .PNG files.
High-quality Calibration Targets Manufactured by Professionals
Foamcoreprint leads the print industry in providing high-quality custom calibration targets and offers innovative tools that simplify the ordering process. Our tools are easy-to-use, without complicated scripts or programming background. We enable customers to customize their boards with various grid types and countless finish options manufacturing precisely to their specifications. FoamCorePrint's easy online ordering process enables customers to upload their own designs or to use our online pattern generator to create the perfect target board.
We are a multiverse team of large-format print experts with comprehensive knowledge of printing precision-manufactured custom print products for over ten years. Our simple, straightforward process and our teams' broad skill set, paired with our high-quality printing, have allowed us to serve individuals, government contractors, and technology companies worldwide. We offer consultancy on our entire print product line and have helped numerous businesses, research teams, and lab institutes develop more successful products and services for almost any application.
FoamCorePrint is devoted to providing excellent customer service, rigorous quality control, and continued product advancement. We are committed to innovating our technology and services and using our fully automated print facility to deliver superior calibration targets with guaranteed quality. FoamCorePrint is a US-based online print company with easy-to-use tools, igniting the path to quality, precision, and more efficient calibration targets. We make it easy to get the target boards you need "Made in America" with a fast turnaround in a budget-friendly way.
Why FoamCorePrint's Calibration Targets?
Award-Winning Customer Service
Our US-based customer support staff is ready to answer any questions during the ordering process and can assist via live chat, phone, and email.
Manufactured In The USA
We proudly print, cut, and ship each target to order in-house in Southern California.
Guaranteed Quality
We guarantee you'll love your high-quality calibration targets. If you don't, we'll be sure to make it right. Learn More
Enjoy Flexible Ordering
Order what you need when you need it, and get discounts buying more in bulk.
Trusted by Professionals
Improve Your Calibration Results in Three Simple Steps
Measure your camera's field of view (FOV) to determine the best pattern and size.
Design or upload your calibration pattern
Order today and get them as fast as tomorrow!
Not finding what you need?
Consult with friendly print experts that can help you target your goals!
Additional Helpful Information
Calibration Targets: The Basics of a Calibration Target Board
Calibration targets are vital in testing and adjusting the color responsiveness of a device. While calibration targets may not be as crucial for vision systems as lenses, vision software, cameras, or illuminations, they are essential in providing more accurate results in computer vision applications.
A vision system's overall calibration accuracy relies on all components involved and the total of their errors. The level of precision can rise with excellent optical system calibration. To achieve the best calibration results, you must start with high-quality calibration targets when dealing with a vision system. Let's detail what calibration targets are and why you need one.
What Is a Calibration Board?
A calibration board is a physical object consisting of a specified calibration pattern whose function is to act as a standard in the precise measurements and adjustment of the color responsiveness of instruments. The process requires very high accuracy to enable transformation generation with similar precision.
Machine vision applications typically need high correctness in measurement and alignment. Some robot guidance and 3D fields utilize the 2D sensor image to form 3D and robot coordinates.
Nevertheless, physical unit measurements, like in millimeters, may need a transformation of the coordinates of the distorted object in measures with accurate results. For example: include volume or size measurements, robot guidance, 3D reconstruction, and photogrammetry.
However, such requirements involve some calibration images as seen by your camera and reality. Therefore, we have to calculate a transformation using a geometrical model, and this is where the calibration targets come to play.
We can picture a famous scene using a camera showing the pattern array with high accuracy. Relying on the known locations of these patterns and the patterns' positions (whether circle grid, target grid, April tags, or something else) measured from the scene's imaging, we can determine the camera's geometric model. We can use calibration targets to transform a pixel position on the image to, for instance, a millimeter position on the known scene.
Color Calibration
Color calibration aims to adjust and measure a device's color response (output or input) to a known degree. It is the basis of the device's color characterization and profiling, according to ICC (International Color Consortium). Regarding non-ICC works, camera calibration may simultaneously denote establishing a known relation to a common color space. The color space serving as the reference is the calibration target, whereas the calibration source is the device undergoing the test. Color calibration is a necessity for devices actively involved in a color-managed workflow. Its application is widespread in many industries, including television production, photography, gaming, engineering, medical imaging, chemistry, etc.
Why Do You Need Calibration Targets?
As the previous section shows, high-accuracy measurement or alignment systems need camera calibration to offer optimal results. Distortions always exist in lenses, whether they function as telecentric or otherwise.
Besides the usual cushion and barrel distortion, the camera's construction may not be parallel to a scene, or failure of coinciding between the lens and camera can result in keystone distortion. However, a calibration target can help calculate extrinsic and intrinsic transformations.
For instance, if a manufacturer provides a 0.1% optical distortion for a telecentric lens and captures an image with a 100mm viewing field, we can calculate a 0.1mm error in the fringing field. Such an error is acceptable for multiple-component systems. However, we can utilize a target we used to calibrate and rectify the measurement and eliminate the error. That is where a high-accuracy system is different from a low-accuracy one.
For example, if you are using the camera to take pictures of plants, it would be necessary to reproduce colors accurately so that when people look at your images, they see what you saw. To do this, you need to use a calibration target with known colors and set up your shot to align with the targets on the screen.
What Problems Do Calibration Targets Solve?
There are several applications where calibration targets come in handy. These include:
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Correcting an image's aspect ratio when it is not 1:1
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Rectifying the perspective distortion that results from a tilted camera installation
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Subpixel accuracy can be achieved
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Fixing a spheroidal distortion in a wide-angle lens
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Returning barrel, radial, nonlinear, or cushion distortion of FA lense
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Selecting the improper positioning of the camera's sensor
Reviews for Calibration Targets
Rating
I called and Dave handled my customer experience from start to finish. He was amazing! Because of his understanding around the calibration patterns we use for our applications, calib.io's pattern generator, and how it scales pdf's to your interface, he was able to both prepare my cart with exactly the proof I needed and explain the technical details so I could perform the same actions if he wasn't available for support. Again, Dave made this experience seamless and has solidified our company's continued partnership with you. Thank you!
Frequently asked Questions
What are some Helpful Ordering Tips for uploading my own design?
These tips will help you through checkout and ensure your targets deliver the best calibration results!
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Always submit full-scale 1:1 files and adjust the product dimensions to match your file size If necessary, use decimals (this will avoid unwanted scaling).
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Upload vector PDF or AI file format in CMYK color mode for optimal print results.
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Double-check to compare your file size to each product size during the proofing process. Make sure they are 1:1. If they are not, you can either remove the files and reupload the corrected versions or update the product finish size to match the file size (repeat step one).
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FoamCorePrint is not responsible for incorrect patterns or finished product sizes due to improper scaling of customer-submitted artworks.
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Submit your files for review - We encourage first-time customers to contact our customer support to review all print files before placing orders via live chat or email.
What is your standard target size?
Our standard target size is 23" x 23"". However, we do not offer pre-made target boards. Each customer's target is custom-made to order. We provide various pattern types, sizes, materials and finish options for you to choose from. We make it simple for you to design your camera calibration board with our easy-to-use online software. Choose from patterns compatible with ROS, OpenCV, MVTec Halcon, MATLAB, and more.
Do custom calibration targets cost more than standard targets?
Unlike the standard targets, there is much custom calibration targets can do, including modifying the target's shape. The cost of custom calibration targets is typically higher than that of ready-made or standard targets because of additional features and finish options. Get a price instantly for your custom target and use our "price calculator" tool to customize and select your target's thickness, size, features, and finish options.
Are your calibration targets waterproof?
Yes, our targets are made from aluminum composite material, which is weather-resistant, rust, rot, and waterproof.
What resolution do you print your calibration targets?
Our targets are digitally UV printed, using lasting, vibrant inks directly to the substrate at 1,200DPI, producing rich and authentic colors.
What size target board is best suitable for me?
A calibration target must occupy most of your camera's field of view (FOV) at the preferred working distance. Regardless, most software packages require visibility of the entire calibration target in all images/photos. So be sure your pattern and board fill your system's whole FOV.
What is camera calibration?
Camera calibration (or camera resectioning) is a 3D computer vision imaging process involving analyzing images of a rigid calibration target moved through a stereo camera pair's FOV (field of view). This procedure determines your camera's intrinsic and extrinsic parameters while triangulating the cameras' positions, and when calibrated, it will accurately correct your lens distortion. Use our free pattern generator software online to help you design the perfect calibration targets for calibrating your cameras that remove measurement bias. If you need help along the way, just ask. We've got the expert insight to get you in the right direction in calibrating your system and adequately defining your 3D coordinate system space in no time!
What is a calibration circle?
A calibration circle is a diagram that helps you understand an image's scale. It is created by drawing concentric circles with different diameters and then dividing them into 360 degrees. This shows how much space there is in the image and helps measure objects to see if they are correctly sized.
What is a calibration grid?
A calibration grid is a tool that can be used to calibrate other measuring devices. It consists of a series of parallel lines printed on paper or plastic sheets, with the spacing between each line being 1 millimeter.
What is camera calibration in computer vision?
Camera calibration is the process of determining a mathematical model for an optical system, in particular, a camera lens. This information can then correct distortions and other aberrations introduced by the optics.
Camera calibration is essential because it helps reduce errors when using the camera's imaging system. Camera calibration is done with special equipment that projects patterns onto surfaces or into space and measures how these are distorted as they pass through the imaging system. The distortion data collected this way provides data needed to calibrate lenses.
What is a calibration matrix?
A calibration matrix is a table of values used to calibrate an instrument's response. This can be done by measuring the response from different known concentrations of analytes and creating a linear relationship between the measured concentration and its corresponding signal intensity. A camera calibration curve can then be created using these data points.
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