Download e-book for kindle: Android Application Programming with OpenCV by Joseph Howse

By Joseph Howse

ISBN-10: 1849695202

ISBN-13: 9781849695206

Take a telephone out of your pocket, and inside of a number of seconds, you could snap a photograph, control it, and percentage it with the realm. you've got simply accomplished mass creation of snapshot facts. With a working laptop or computer imaginative and prescient library reminiscent of OpenCV, you could examine and remodel copious quantities of photo facts in genuine time on a cellular equipment. The upshot to this can be that you simply, as builders, promises cellular clients with many new varieties of pictures, always highlighting sure visible positive aspects which are of inventive or functional curiosity. Android is a handy platform for such experiments since it makes use of a high-level language (Java), it presents standardized interfaces for sharing snapshot facts among functions, and it truly is regularly open resource, so each person can learn its implementation.

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Additional info for Android Application Programming with OpenCV

Sample text

For this book's purposes, the other TADP samples are not relevant. Once the OpenCV projects no longer show any errors, we can prepare to test them on an Android device. 2 (Froyo) or a greater version, and a camera. To enable Eclipse to communicate with the device, we must enable the device's USB debugging option with the help of the following steps: 1. Open the Settings app. 2. 2 or greater, go to the About phone or About tablet section and tap Build number seven times. This step enables the Developer options section.

Get permission to use the camera. • Get permission to write the files to the permanent storage. • Restrict the screen orientation to landscape mode because OpenCV's camera preview does not handle portrait mode well. org/question/7143/mirror-imageon-android-front-camera/. wordpress. com/2012/03/12/display-orientation-issue-when-working-withopencv-on-android/. • Register the second activity. We can accomplish these tasks by editing the uses-permission, uses-feature, and activity tags in the manifest.

The CameraActivity class will show the preview and provide menu actions so that the user may select a camera (if the device has multiple cameras) and take a photo. Then, the LabActivity class will open to show the saved photo and will provide menu actions so that the user may delete the photo, or send it to another app for editing or sharing. To get a better sense of our goal, let's look at some screenshots. Our first version of CameraActivity will look as follows: When the user presses the Take Photo menu item, the LabActivity class will open.

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Android Application Programming with OpenCV by Joseph Howse


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