title: Android/Java: Find an image match (Big image contains small image)
body: <p>Thank you for reading my question.</p>
  
  <p>I want to check the big image contains another small image.
  I'm trying Image Search. There are 2000+ more small images and I want to compare these with one big image.</p>
  
  <p>If big image contains small image, it is obvious that the big image contains almost of small image.</p>
  
  <p>There is no small image's rotation. The ratio of image is same.</p>
  
  <p>But the size is different. I mean if the small image size is 100x100 pixel, the another small image (in the big image) size could be 150x150, 50x50.. and else.</p>
  
  <p>I know there is OpenCV's template matching.
  But it makes my app heavy and takes a long time.
  I think I need another way.</p>
  
  <p>Would you recommend something I need to do?
  I really appreciate it if you could give me just a little hint.</p>