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png
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===
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Saves and loads png images.
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Install
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=======
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- Mac OSX: brew install libpng
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- Ubuntu: sudo apt-get install libpng-dev
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Usage
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=====
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Loading png files
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-------------------
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`i_pngfile toto.png | o_gtk_image` loads the png toto.png and displays it.
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You can load a lot of images by specifying the number of image to load with -n3.
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Then define the filename like with printf format.
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Example loading toto0.png, toto1.png, toto2.png: `i_pngfile toto%d.png -n3 | o_gtk_image`
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It reads at the speed of the reader.
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Need libsndfile:
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You may specify the time between each image with `-p`.
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Use -p33 to simulate a framerate of 30FPS.
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Saving images in png
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--------------------
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OSX
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---
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`i_image.sh | o_pngfile toto.png` save the image from your webcam in toto.png.
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brew install libsndfile
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- Note 1: your webcam may be slow to start and having a black image at first. You can save 3 the third image with option -n3.
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- Note 2: depending on your camera property, the format may not be recognized by the libpng you can convert it with for example in black and white with -fY800. It may not be recognise at all by i_image.sh.
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Ubuntu
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------
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Like for reading, you can save many images with -n and a specific file format.
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sudo apt-get install libsndfile
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\ No newline at end of file |
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