Where to get background sample images for haar training? [closed]

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I need collection of sample images (negative images, or also called background images) for haar training using opencv. It is written that I need to h开发者_如何学运维ave a lot of them. About 5000 or 10000. Do you know where to get them?

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This site have some haar negatives from various databases. You can download by svn: svn co http://tutorial-haartraining.googlecode.com/svn/trunk/data/negatives/

UPDATE: It is possible that the repository died, so you can go to GitHub. I found one that was exported automatically from google code here.

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you can find it anywhere especially in google.. negative images are just images that does not contain your positive images/samples which is the object of interest.. anything that doesn't contain your object of interest can be a negative samples..