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==Digital PTZ== | ==Digital PTZ== | ||
Digital PTZ is based on 3 parameters: input resolution, output resolution and | Digital PTZ is based on 3 parameters: input resolution, output resolution, and properties (pan, tilt, and zoom). the properties can be described as following: | ||
===Zoom=== | ===Zoom=== | ||
The zoom can reduce the resolution of the output image and the output image can be crop or a complete image, taking the input image as complete reference. Follow picture | The zoom can reduce the resolution of the output image and the output image can be crop or a complete image, taking the input image as a complete reference. Follow the picture below which explains how it works: | ||
[[File:ZOOM.png|500px|thumbnail|center|]] | [[File:ZOOM.png|500px|thumbnail|center|]] | ||
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=== Using Gstd === | === Using Gstd === | ||
For the PTZ example we will use | For the PTZ example, we will use Gstd that allows us to change the values of any property of the elements in the pipeline while the pipeline is running, in our case is very useful that feature. | ||
The next example script can move a cropped window around a video playback, also the window can be zoom-in and zoom out. | |||
how to use the example: | how to use the example: |