Damiles Blog. A computer vision, OpenCV and IT technology blog.

  • Mail Sent error 550 5.1.1 Recipient address rejected: User unknown in virtual mailbox table

    I have some webservers and hundred of domains, and the other day i create 4 domains for a customer, and 2 of the domains have in same machine the emails, and the other 2 in thirth party servers as Gmail o Yahoo, and when user send email from one of 2 servers to other externals server get this error:

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  • Mastering OpenCV with Practical Computer Vision Projects

    Announcing the new "Mastering OpenCV" book that I co-authored!

    The book "Mastering OpenCV with Practical Computer Vision Projects" is now for sale from Packt Publishing with free shipping to many countries! Each chapter is a separate project containing step-by-step tutorials + full source-code using the latest C++ interface of OpenCV v2.4, written by 7 authors that are well-known among the OpenCV community for their blogs & open-source projects.

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  • Gnuplot Cookbook

    I'm very happy, Gnuplot cookbook arrive to my hands. I had the pleasure to review this great book.

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  • Removing .svn folders from project

    A loft of times some people send me project with subversion, and when you  upload to production, sometime you don't want upload .svn folder, looking for in google i found this. A good miracle command for me XD, and sure a stupid command for a lot of people.

    rsync -r --exclude=.svn /home/user/progname/ /home/user/progname.copy

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  • Segmentation and feature extraction. Contours and blob detection.

    In BasiOCR tutorial i explain  how to preprocess, extract features and clasify a handwritten number, and a lot of people ask me how to segment an image where contains several numbers or objects.

    In this tutorial I want explain how to segment an image and detect each object inside image, in this tutorial we can detect objects from plate (the numbers) or each object draw into a paper.

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