Codename One
BoofCV
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Codename One | BoofCV | |
---|---|---|
88 | 20 | |
1,646 | 1,036 | |
1.6% | - | |
8.5 | 8.5 | |
7 days ago | about 6 hours ago | |
Java | Java | |
GNU General Public License v3.0 or later | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Codename One
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A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
codenameone.com — Open source, cross-platform, mobile app development toolchain for Java/Kotlin developers. Free for commercial use with an unlimited number of projects
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Android Play Billing Needs updating
This was resolved in this issue: https://github.com/codenameone/CodenameOne/issues/3706
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Backward Compatibility, Go 1.21, and Go 2
Naturally depends on the use case, yet they work good enough to be in business for 20 years.
https://www.ptc.com/en/products/developer-tools/perc
https://www.aicas.com/wp/products-services/jamaicavm-tools/
https://www.codenameone.com/
Android 5 & 6 (only changed back into JIT/AOT due to long compile times), https://www.infoq.com/news/2014/07/art-runtime/
Unfortunely the best well known, Excelsior JET, is no longer in business, most likely due to GraalVM and OpenJ9 being available as free beer, while PTC, Aicas Codename One are safe in their domains.
There is also RoboVM (https://github.com/MobiVM/robovm) as free beer, however it actually started as a commercial product, and the acquisition from Xamarin kind of stagnated it (naturally).
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Can't Reproduce a Bug?
At Codename One, we were using App Engine when our daily billing suddenly skyrocketed from a few dollars to hundreds. The potential cost was so high it threatened to bankrupt us within a month. Despite our best efforts, including educated guesses and fixing everything we could, we were never able to pinpoint the specific bug. Instead, we had to solve the problem through brute force.
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Mobile Apps with Java
We don't use GraalVM since our project was developed prior to its existence and we aimed for deeper native integration than it can offer: https://github.com/codenameone/CodenameOne
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Developing cross platform mobile application [closed]
XMLVM, Codename One and iSpectrum (cross compile Java code from an Android app or creating one from scratch
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Apple Offer Codes
I suggest filing an RFE in the issue tracker.
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Play Billing Library Version Deprecation
Thanks. It's always good to get another reminder. Yes, it was reported. u/shannah78 is working on this but we have time until November.
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Problems compilint to android side
please check this issue https://github.com/codenameone/CodenameOne/issues/3686
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The Holy Grail of Java Performance
We use ParparVM which we wrote. It compiles a subset of Java 8 (sort of) to native by translating the bytecode to C and passing that through XCode. The reason we took this path and not the path of "direct to native", is that it allows for future compatibility.
BoofCV
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Recommended camera/projector calibration software?
BoofCV https://github.com/lessthanoptimal/BoofCV
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JDK 21 - Image Performance Improvements
Is there any fast way to get pixel values and pixel coordinate? I had to jump through a lot of hoops to get convert BufferedImages into a format that's useful for image processing it to be a reasonable speed in BoofCV. getRGB() is glacial. At one point I was trying to convince the JDK team to make private data structures public again. Right now it's inconsistent what you have access too.
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Mobile device based surface defect detection for manufacturing quality control
Apologizes if this post runs afoul of the rules. This is a product we are making that started as an open source project (here).
- BoofCV 0.40 Released. Micro QR Code, Transposed QR Codes, Speed improvements, Strict null enforcement
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The Ancient Secrets of Computer Vision
I will take the opportunity to call out one of my favourite libraries, BoofCV (http://boofcv.org)
It comes with a wonderful demonstration tool that allows you to apply the various included algorithms to images and tweak the parameters in real-time – including the Hough transform. A great tool for helping to understand how these kinds of algorithms work!
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Good Open Source Repositories that Accepts New Contributors
Speaking of using the vector api, I see there's a class in boofcv that converts rgb to hsv. I've previously written a simd accelerated version of rgb to hsv using the java vector api. For anybody looking to do a bit of code janitor work, converting the one-off library into something that could be contributed to /u/lessthanoptimal's project might be a worthwhile contribution.
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JavaFX .jar (from clojure) won't find "glass" when run via `java -jar`
For instance I looked at BoofCV and all I found was : https://github.com/lessthanoptimal/BoofCV/issues/265 " the question now seems to be can you compile the library as native. The answer is probably but someone needs to try it."
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BoofCV v0.38 Release Summary
It's an all-Java computer vision library, see https://boofcv.org/ and https://github.com/lessthanoptimal/BoofCV
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BoofCV v0.38: Much improved scene reconstruction, loop closure, more concurrency. Also updated PyBoof
project website: https://boofcv.org
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Feedback Requested on Updated BoofCV QR Code Tutorial
There really is a community for everything on Reddit... Anyways, so I've updated the tutorial on QR Codes in BoofCV. If you're not familiar with it, BoofCV is a computer vision library that also includes a high quality QR Code scanner. Plenty of benchmarks and examples can be found on the website to back that up. Here's a link to the tutorial page and please let me know if it all makes sense. The tutorial focuses on applications which are either command line or have a GUI.
What are some alternatives?
Multi-OS Engine - Multi-OS Engine: Create iOS Apps in Java (or Kotlin ... etc.)
OpenCV - Open Source Computer Vision Library
Design Patterns - Design patterns implemented in Java
EasyOCR - Ready-to-use OCR with 80+ supported languages and all popular writing scripts including Latin, Chinese, Arabic, Devanagari, Cyrillic and etc.
J2ObjC - A Java to iOS Objective-C translation tool and runtime.
fSpy - A cross platform app for quick and easy still image camera matching
sitemapgen4j - SitemapGen4j is a library to generate XML sitemaps in Java.
Tesseract.js - Pure Javascript OCR for more than 100 Languages 📖🎉🖥
Maven Wrapper - The easiest way to integrate Maven into your project!
OCRmyPDF - OCRmyPDF adds an OCR text layer to scanned PDF files, allowing them to be searched
Modern Java - A Guide to Java 8 - Modern Java - A Guide to Java 8
PaddleOCR - Awesome multilingual OCR toolkits based on PaddlePaddle (practical ultra lightweight OCR system, support 80+ languages recognition, provide data annotation and synthesis tools, support training and deployment among server, mobile, embedded and IoT devices)