From b86b3a500e402dcfcc8d4e0c2397bec7b7714efd Mon Sep 17 00:00:00 2001 From: Quentin Bolsee <quentinbolsee@hotmail.com> Date: Wed, 3 Apr 2024 13:59:31 -0400 Subject: [PATCH] docs --- README.md | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/README.md b/README.md index 513dde2..fc10ac7 100644 --- a/README.md +++ b/README.md @@ -1,10 +1,10 @@ # open-frame-scan -<img src="img/frame.jpg" width=90%></img> +<img src="img/frame.jpg" width=70%></img> This device is an open-source approach to scanning flat surfaces. The frame is simply placed on top of the surface to scan, and a computer vision software analyzes the picture to extract a rectified picture with real dimensions (pixels/unit). -<img src="img/comparison.jpg" width=90%></img> +<img src="img/comparison.jpg" width=70%></img> This project is inspired by the [Shaper Trace](https://www.shapertools.com/en-us/trace), but offers an open source interface and lets users scan color images, not just vectors. @@ -30,21 +30,21 @@ If you have access to digital fabrication tools, the most straightforward way to The first step is to weed the vinyl in place: - +<img src="img/vinyl1.jpg" width=50%></img> The result is then stuck onto transfer tape and laid flat: - +<img src="img/vinyl2.jpg" width=50%></img> After joining to the frame, the transfer is peeled off, revealing the finished frame: - +<img src="img/vinyl3.jpg" width=50%></img> ### Inkjet printing Alternatively, you can print the design of the frame using an inkjet printer, then glue it to a thin piece of cardboard: - +<img src="img/cardboard.jpg" width=50%></img> The small frame is designed to be printable on an A4 page (or letter), and the medium frame fits on an A3 page. @@ -52,20 +52,20 @@ The small frame is designed to be printable on an A4 page (or letter), and the m To quantify the accuracy of the scanning, a 25mm calibration grid was built: - +<img src="img/grid.jpg" width=70%></img> Here is the image used for analysis, showing the detected features (aruco markers in blue, corners in red): - +<img src="img/features.jpg" width=70%></img> Here is the extracted image: - +<img src="img/result.jpg" width=70%></img> The grid feature points are automatically extracted: - +<img src="img/grid_features.jpg" width=70%></img> Finally, the distance between neighboring grid points is measured, revealing the accuracy of the scanning process. Here is a comparison of all frames, including the Shaper Trace, showing improved accuracy and less variance: - +<img src="img/plot.png" width=70%></img> -- GitLab