Photo Tagger: Opening Accuracy
Source: Tom's Guide US | Keywords: facial, recognition, tagging | Themes: Software
- 1. The Tagging Challenge
- 2. Apple iPhoto ‘09
- 3. Apple iPhoto ‘09: First iPhoto Steps
- 4. Apple iPhoto ‘09: Wrinkles in Faces
- 5. Apple iPhoto ‘09: Funny Faces
- 6. iPhoto Analysis
- 7. CyberLink MediaShow 5
- 8. MediaShow 5: Warning--Wide Load
- 9. MediaShow 5: UI and Criticisms
- 10. MediaShow 5: Criticisms, Cont'd
- 11. MediaShow 5: Analysis
- 12. Face.com Photo Tagger
- 13. Photo Tagger: Opening Accuracy
- 14. Photo Tagger: The Tagging Process
- 15. Photo Tagger: Working With Photo Finder
- 16. Photo Tagger Analysis
- 17. Google Picasa 3.5
- 18. The Picasa Name Game
- 19. Picasa’s No Dog
- 20. Picasa Analysis
- 21. Microsoft Windows Live Photo Gallery
- 22. WLPG: Name On!
- 23. WLPG: Naming, Bonus Round
- 24. WLPG: Analysis
- 25. More on this topic
13. Photo Tagger: Opening Accuracy
Like other face taggers, Photo Tagger groups supposedly similar images together. Given that pictures of my two boys dominate my personal photo collection, it makes sense that the first groups are of my kids. Notice near the top right corner that Photo Tagger keeps track of showing you how many faces were found, how many remain untagged, and, at the top of the list, the percentage of faces you’ve completed tagging. This is a subtle way of saying, “Go ahead. Tag everything. You don’t want to leave the job unfinished, do you?”
Initially, I was impressed with Photo Tagger’s accuracy. You can see in this capture of my first groups found in the 200-photo album that 23 of the 24 faces tagged in the first group are of the same boy, crushing the accuracy of both iPhoto and MediaShow. Hitting 10 out of 13 in the second group isn’t quite as stunning, but it’s still decent.
Now, how inclusive were these first group hits? Within that 200-image album, there were 62 images of my eldest son, so Photo Tagger put 23 of 62 into that opening group. My youngest didn’t even fare that well: 10 out of 59 in the second group.
Trying to figure out why Photo Tagger created the associations it did in subsequent groups was interesting. In one triad, the common theme was kids in sunglasses. In another line of images, it seemed to be shots that were straight-on, expressionless, and a bit out of focus. Interestingly, Photo Tagger seemed to finish dealing with whatever kid pictures it felt even mildly confident about before moving on to the adults. So apparently, the app ranks returns with a combination of match confidence and number of likely matches.
Curiously, Photo Tagger seemed to have an easier time associating a wider diversity of images of my kids than it did of me. In the following shot, you can see four different groups of “William hits.” There’s some correlation with my age, but head angle seems to be at least as influential. It’s also interesting that Photo Tagger lumped a photo of me at age 12 in with my youngest son. He and I have similar head shapes, but I’m guessing the association has more to do with the shape of our smiles and hair lines than any other factors.
- Previous page Face.com Photo Tagger
- Next page Photo Tagger: The Tagging Process
Please update more on:
(.
1. let just say I have spend weekly time on a low end pc to get 33 GB photo with so many file. How do I save this tag when I am reinstall windows?
2. About the portabilty in no 1. Picasa has picasa.ini in every folder, but when it corrupt, the picasa.ini is not helpful recovering the weekly time spent.
3. Speed? Why there is no benchmark graph like usual?
4. Try gradiation photos or something similiar. It will see about the acuration.
5. I want to get the best speed, what is the most needed hardware. If Processor will I7 better than C2D? If GPU, will Geforce GTX 295 better than 9800?
I have private paint experience using picasa. I have taging many face in a week of Sempron 2800+ OC to 2 Ghz. When the face recognation is done, for what ever reason, my cpu is dead (dead power electricity). When the electricity power is up, my pc is on windows. The picasa is corrupt. My one week OC is for nothing. DAMN
I recently tagged all my photos with Picasa. I think i personally tagged more than the software did--the software is VERY cautious. It also repeatedly asked to tag posters, even paintings that were on my walls. Finally, it doesn't do well with babies--which is no surprise because they all look the same to me too :-)
Its cool, but im not sure the outcome was worth sitting there tagging hundreds of pictures of ex-girlfriends.
I am giving comment for testing.
Deadlockedworld--you don't have to tag everyone in every album in Picasa--just don't tag albums that have your exes in them. I definitely don't tag everyone in my photos--only those people that are important to me.
Adobe's Photoshop Elements 7 has the ability to detect faces but not automatically match them. It did make tagging much quicker. I could select 40 pictures from a party and tag the lot all at once.
However, I found that there were several pictures that it didn't catch. So, I ended up having to go through the whole bunch manually anyway to catch the stragglers. I found I spent as much time, if not more, making sure I got everything. So, I'm not sure that the "helpful tool" actually did much.
I am using iPhoto '09 and I found that the predictive tagging is getting less and less accurate as the database of tagged faces increases. Impression confirmed by one of my friends using the same app. For example, my wife is probably the most frequent face in my collection and the software has a hard time identifying her. On the other hand, I tagged the face of a friend I see rarely and I was welcomed with 4-5 good matches.