Detect rotation angle of scanned documents with openCV in Java

Are you a master of openCV and you can easily fix issues with wrongly scanned documents. The documents are either slightly rotated (about +/- 0-30°) or totaly wrong oriented (about 180°) Mandatory libs - [login to view URL]'s javacv-platform lib - [login to view URL]'s openpdf lib - [login to view URL]'s pdfbox lib Restricted libs - any Spring lib Payments Our payment plan are fixed to the delivery of this milestones: #1 (20% payment) - provide us full working implementation as source (see also later: in our git repository, no zip file or binary file deliveries are accepted!) - project gets build with maven - implementation contains rotation angle detection in degree (orientation is not mandatory in this step) implement a method: double getRotatedAngle([login to view URL]) #2 (20% payment) - provide us full working implementation - implementation contains detection of orientation OrientationEnum getOrientation([login to view URL]) #3 (20% payment) - provide us full working implementation - implementation contains a filtering of vertical lines caused by dust on the scan LEDs [login to view URL] filterVerticalLinesOfScannerDust([login to view URL]) #4 (40% payment) - after our finished tests (can take up to 14 workdays) #5 (20% bonus) - if you deliver in time (less than 3 days) and in quality (10% delivered milestones in time and 10% delivered in quality, means without any issues, which are easily to find with simple tests and code reviews) Qualifications Share us openCV code samples which you implemented with a brief description what it solves Your delivered artefacts have to be: - the full source code with JDK8 features (e.g. preferably annotations, if possible) - a fully working [login to view URL] to build, test and run the application - a fully working [login to view URL] to build the application as a single jar (embedded all jar inside this single jar) - a delivery of all sources has to be done in our a selfhosted gitlab (git repository and issue tracking). We will share the access after we award you the project - all features of JavaSE and JavaEE standards are allowed - preferably already solved problems like in apache commons is strongly recommended - additional libs need to be mentioned prior usage to avoid licensing issue - spring is restricted for this project - your code will pass standard checks in findbugs, checkstyle and PMD Runtime Your delivered artifacts will run with/in: - Eclipse Oxygen with 5 mandatory plugins shared in the repo README (we do not test no Netbeans nor Idea IntelliJ!) - Maven 3.2 - oracle jdk8 version 111 or newer Communication We do not want to waste your time, so do not waste ours. Provide us all answers to our job description in your job application. Also do now wait to see us online, we will respond on any question regarding the job description or for clearance of unclear requirements. Before not having your prove of expertise: we will not respond on queries about budget nor on queries to get us into a discussion about anything else as the requirements Budgets and rates Place your offer independently of our offer. We do not disclose our budget nor do we disclose our rates which we are willing to pay.