Checkerboard Calibration Targets

It is a physical object which consists of a specified calibration pattern and whose function is to act as a standard in the measurement and adjustment of the color responsiveness of instruments. The process requires very high accuracy to enable transformation generation with a similar degree of precision.

It is a type of calibration target used in the process of calibrating cameras when taking pictures. It is usually made up of black and white squares that are arranged on a square grid so that they create alternating rows with one black square followed by one white square, then another black square, etc.

These targets are used to calibrate the sensors in a camera. This is done by taking multiple pictures of a checkerboard with the sensor and then comparing them against one another to find out how far off they are from being perfectly aligned. Created by Zhang camera calibration methods involving using fabricated 3D apparatus with painted checkerboard patterns, like two orthogonal planes hinged together. With this technique, the camera records the projection of a 3d scene onto a 2D image plane. As such, it's easy to determine the camera parameters with a camera focus chart.

The most common industry to use a checkerboard calibration target is the military. For soldiers to be able to see at night, they need equipment that can project an image on their retinas for them to be able to see better. These targets are used because they have high contrast, and it's easy for people with normal vision to detect changes in brightness.

The benefits of checkerboard calibration targets are that they allow for the measurement of distortion, which is the bending or stretching of an image as it travels through a lens system. This distortion can make images appear distorted and sometimes even unrecognizable. A checkerboard calibration pattern allows this to be measured by taking two pictures with one camera at different angles relative to another. The difference in these measurements will give you information about how much distortion has occurred. If your lenses are not already calibrated, you should have them checked out before purchasing new ones.

Everything Foam Core Print offers is manufactured to spec or "custom to order," meaning the clients selects the exact finish size down to 100th of an inch. We can manufacture targets as small as 4x4" and as large on one sheet at 48x96 on the Dibond panel.

Standard turn around for these targets is 3 business days and is based on the approval of the art file for the order, not the time of purchase. We do offer next day turnaround as well as same day production. The cut off time for production to begin is 10am PST for "standard" 3 day turnaround, 8am for next day & same day production. The website is fully automated and will generate pricing when you add items to cart so the best way to get pricing is to add all items to your cart and "proceed to checkout" to update your zip code for shipping & turnaround options for grand total pricing. 

Yes, they are water, rust and weatherproof. We direct print onto the face of the Dibond also known as "ACM" at 1000 dpi (dots per inch) for the longest lasting high-resolution print quality. See more info the Dibond material read our artical What are Dibond Signs? Or visit 3A Composites for downloadable full spec sheets.

All products ordered from this category page will automatically get a "flood white" true matte finish. It's this anti-reflective surface "flood white" authentic matte finish that allows for easy detection in your computer vision pipeline because of its optical performance and physical robustness.

The physical weight (.125" Dibond) is 0.78125 lbs per ft.². The formula for weight calculation on your specif dimension product can be figured by multiplying your length x width divided by 144 = Your Physical Weight.

Dibond is a trademarked brand of aluminum composite material. Dibond signage comprises two sheets of aluminum, plastic, or PVC with a layer of polyethylene sandwiched in between. The front, back, and polyethylene core have been sealed with an adhesive, creating a tight, long-lasting bond. Read more about What you need to know about Dibond signs.

ACM (aluminum composite material) is considered off-brand or "generic." Dibond is a trademarked brand of aluminum composite material manufactured by 3A Composites. Foamcoreprint.com only uses genuine Dibond in the manufacturing process.

Dibond's lifespan can vary depending on five key factors. But a general rule of thumb is 5-10 years 

1. Harsh or extreme weather
2. How much sunlight exposure your sign has and how often
3. How often is there salt on the ground from snowfall
4. The colors selected for the design "Reds and bright oranges often fade first."
5. Natural elements; hurricanes, tornados, heavy snow, flooding, and hail

Rounded corners refer to the finish of the physical board itself. The edges will have a nice straight cut finish without rounded corners, where round allows smooth rounded corners. The measurements refer to the corners' severity or degrees (radial bend). Rounded corner sizes from less to more dramatic corners;

• 3/8""
• 1/4"
• 1/2" standard
• 3/4"
• 1"

No problem! That's is considered a "special" cut option. There are some additional steps for artwork set to run properly through production. See the step by step tutorial on How To Set Up Cut Files. Need help setting up your files for a project? Feel feel to start a live chat or email with the details of your project to get pricing today. 

A Cut option is NOT required; it is a unique finishing option for shapes other than squares or rectangles, drill holes, or a particular size or placement.

• Special-Cut (custom shape, inside and outside cuts are okay) ** requires additional art set up; check out How to Set Up-Cut Files.

Yes, you can. While Dibond is fairly easy to drill through with the proper home drill and metal bits It is not recommended. Start a live chat and ask a rep about our "special cut" finish option!

No probelm at all! We offfer a free online checkerboard pattern generator to help you create images designed to your owns specific checkerboard calibration requirements.

There are many ways to mount and hang camera calibration targets and Dibond signs; Here is a list of a few hanging methods.

• Screws and Bolts
• Flush mount on a wall with drill holes
• French cleats
• Hang on walls with 3m adhesive strips or double side Velcro tape
• Double-sided acrylic VHB tape (great for long terms use)
• 3M adhesive-backed hooks

File types accepted for checkerboard calibration: Photoshop (PSD, TIFF, EPS, PDF, JPEG, PNG, SVG) **special cut require Illustrator set up (AI, PDF, with all fonts outlined) Any other graphic program capable of creating a PDF, TIFF, EPS, JPEG, PNG, SVG file. However, The best file formats are PDF and AI files. Vector PDFs are our preferred file format. Vector files are created with shapes and colors and will always print at 300dpi at any scale. Check out our free online checkerboard calibration pattern generator and start making vector PDF patterns today! 

There is always a lifespan on any product. If the products are cared for, cleaned, stored away correctly, they will last many years. Our checkerboard calibration techniques use UV-coated permanent LED inks are designed to hold up over time to sunlight. The more direct contact with the daylight your prints have will impact the longevity of your prints. Generally 3-5 years before you notice sunfading to the naked eye. 

Yes, you can print whatever file you like on the back. All pricing is square-foot based; pricing will not change based on the number of uploaded artworks.

Cleaning these targets is simple and very easy. Here is a list of things you'll need along with instructions;

• Two microfiber cloths
• One medium-size bowl
• Dish soap (dove works great)
• Hot or warm water, a bucket would be great.

Step by Step Instructions

1. Use the first microfiber cloth and warm water to wash off any easy-to-remove dirt.
2. Place an empty bowl next to your target.
3. Add dish soap into the bowl and add warm water.
4. Soak the microfiber cloth in the soap water and gently wipe down the checker board. 
5. Be sure not to rub or wipe too hard; pay attention not to scratch the surface. 
6. Take your second and final microfiber cloth and dry off all remaining water until dry to the touch. 
7. Repeat steps 4 through 6 until you are happy with the results.

You will need to place the order and fully complete the transaction. Once the order has been placed, you will be directed to the Upload Artwork page. From there, you will be able to upload your image or artwork and view the pre-proof. 

In proofing, you MUST confirm that your Art file matches the order size to avoid scaling up or down. If the PDF file uploaded to the order matches the order size go ahead and send your artwork to print, and production will begin. You can remove and upload image as many times as you like; production will not start until you approve the proofs.

Great question! Please DO NOT send art files to print if you have any questions about your online proofs. Please contact us via live chat, email at info@foamcoreprint.com, or call 855-465-7744 before sending files to print. There is a 10 min window approved proofs can be removed and taken out of the production line; clients can remove approved art files within the 10 min window from the user dashboard in the order history tab.

There is a 10 min window after proofs are approved where they can be removed and taken out of the production line; clients can remove any approved art files within the 10 minutes of approval of that specific art file. 

1. Sign in to your account
2. User Dashboard 
3. Order History  
4. Locate the Order# in question.
5. Click "See All Jobs / Details"
6. Under the Actions section, if the "Replace Artwork" is RED, you are inside the 10-minute window and CAN remove the file by selecting the button.
7. If the "Replace Artwork" button is "Grayed Out," it is past the time of removal, and production has begun.

To be able to print these camera calibration targets, the most straightforward answer is to hire a professional providing this service. One that we can recommend is foamcoreprint.com. We provide excellent customer support, and our prices are very competitive. If you want more information or would like to order some some, don't hesitate to get in touch with us at info@foamcoreprint.com

The camera calibration method is intended to identify the geometric characteristics of the image creation process. This is a vital step to perform in many computer vision applications, especially when metric information on the scene is needed. Essentially, computer vision uses CNNs and deep learning to perform high-speed, high-volume unsupervised learning on visual information to train machine learning systems to interpret data in a way somewhat resembling how a human eye works.