This document discusses taking a photo with an old sister and considers the feasibility of an app to do so. It determines that the current limitations of image processing technology make this too difficult, but it may be possible in the future as the technology advances. The document does not reach a clear conclusion.

1. L Ê V Ă N N G H Ĩ A
An idea

2. Approach

3. Thinking!
How can I take photo
with my old sister?

4. App specification

7. Realizable?
 Too difficult at present
 Because:
 Limitation of Image processing technology
Realizable in the
future?

8. Conclusion