opencv_contrib/modules/v4d/tutorials/01-dislay_image.markdown

Display an Image

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Original author	Amir Hassan (kallaballa) amir@viel-zu.org
Compatibility	OpenCV >= 4.7

Using the video pipeline

Actually there are two ways to display an image using V4D. The most convenient way is to use the video pipeline to feed an image to V4D. That has the advantage that the image is automatically resized (preserving aspect ratio) to framebuffer size and color converted (the framebuffer is BGRA).

@include samples/cpp/display_image.cpp

Using direct framebuffer access

Instead of feeding to the video pipeline we can request the framebuffer in a fb context and copy the image to it. But first we must manually resize and color convert the image.

@include samples/cpp/display_image_fb.cpp