Hi, would love to have this API on Mashape.com
Show HN: API for detecting people, cars, and everyday objects in images
61–70 of 74 posts
Re: Show HN: API for detecting people, cars, and everyday objects in images
#62Earlier quoted context omitted.
One to two cents a task. Anytime you have a language agnostic task (identifying/classifying objects, etc), the tasks can be done very cheaply. Just make sure you do triplicate validation. Language dependent/creative tasks run much higher (smaller worker pool, more brain power needed).
I've never used mechanical turk before and don't understand what you mean by language agnostic. I'd want someone to tell me that it's a "car" and not a 汽車. And I'd want to give the instructions for the task in English.
Use icons!
Re: Show HN: API for detecting people, cars, and everyday objects in images
#63i submitted several plain and easy images to this supposed service. it failed to detect the object in every single instance.
Hey losers FUCK OFF this is a technology site.
Re: Show HN: API for detecting people, cars, and everyday objects in images
#64Concerning the API: (On page https://www.dextrorobotics.com/api)
* The documentation is pretty weak.
* I am not sure what a classID is, and I don't see any links to where the numbers come from.
* The example request is posting to an insecure http address, but the secret api key is required?
* The example request doesn't fit on one line? It took me a while to see it was in the "GET / HTTP/1.1" style.
* How do errors work? Having clearly specified error responses would be really useful.
If you trying to sell me on your API, show it to me.
Re: Show HN: API for detecting people, cars, and everyday objects in images
#65Hmm.. It's a fantastic idea and really great website, but the actual algorithm is very unprecise.
See this: http://i.imgur.com/ulith.png?1
You need to get a higher percentage of actual matches before you can use this for anything.
Re: Show HN: API for detecting people, cars, and everyday objects in images
#66Isn't there a risk for this service to be used as an image proxy? The analyzed images are rehosted on their S3...
Re: Show HN: API for detecting people, cars, and everyday objects in images
#67Over a dozen experiments, the recognition rate for faces seems to be about 70%. Example of failure: only 2 faces detected here (in particular NOT the one in focus) http://iamdaveknockles.files.wordpress.com/2011/03/meeting_j... This is worse than OpenCV (I thought you were using OpenCV but apparently aren't?)
Similar result with the image below. It got four of six faces, missing the most important of the faces. http://www.bostonglobe.com/rw//Boston/2011-2020/WebGraphics/...
If you read the description on the site, you'd know that the face detection stops after finding 4 faces.
Re: Show HN: API for detecting people, cars, and everyday objects in images
#68Is there a good way for submitting recommendations for improvements? http://i.imgur.com/yLSHW.jpg
Re: Show HN: API for detecting people, cars, and everyday objects in images
#69Looks like this is using training data from the PASCAL VOC object detection challenge [1], which is the standard benchmark for evaluating object detection performance in computer vision. Object detection is an extremely tough problem (some would say it is the computer vision problem ;-)), and while we've made a lot of progress in the past decade, the best methods are still terrible [2] -- average detection precision…
One of my main hobbies is photography. I do mainly outdoor shots, and really enjoy macros of flowers. The problem being that "oh last weekend I took an amazing shot of a purple flower" isn't all that helpful for someone who is trying to find a picture of an iris. When someone comes up with an algorithm that can take my shot, compare it to a library, and tell me what wildflower it is, I will be a happy camper. I suspect Flickr and 500px will also become more valuable places since it would be possible to correlate geotagged shots with flora to document what seems to be there.
Re: Show HN: API for detecting people, cars, and everyday objects in images
#70Earlier quoted context omitted.
Similar result with the image below. It got four of six faces, missing the most important of the faces. http://www.bostonglobe.com/rw//Boston/2011-2020/WebGraphics/...
If you read the description on the site, you'd know that the face detection stops after finding 4 faces.
How would I know that? I don't read documentation until absolutely necessary. If it claims to find faces, well, then let's see it work! And then we'll count the faces found.
In any case, the documentation is wrong if it says that. E.g., the software found all seven SEGs in the photo below:
http://www.bagnewsnotes.com/files/2011/10/Romney-Bain-Capita...
