7 ms·

Face detection for cats in JavaScript

80 points by stevewilhelm 14y ago

aeurielesn 14y ago
Tom Cruise has definitely a catty smile - http://i.imgur.com/Mxbop.png http://i.imgur.com/Mxbop.png
- ArekDymalski 14y ago
  Of course. He's Cheshire: http://lordwhatsmymotivation.files.wordpress.com/2008/10/cheshire-cat-4.jpg http://lordwhatsmymotivation.files.wordpress.com/2008/10/che...
csaba 14y ago
This is not working for me, with the test images (or any other image). :\ Edit: Cannot read property 'type' of undefined. Demo.js:64
- NameNickHN 14y ago
  What browser and platform are you using? I'm using Firefox and it's working fine for me.
  - csaba 14y ago
    Windows 8, chrome 22, opera next, opera 12.02, firefox 15. Hmm, actually in ie 10 it's doing it's stuff.
- seanlinehan 14y ago
  I have the same issue. I'm on Chrome + Ubuntu.
- molukk 14y ago
  Had the samme issue. Chrome 21 (and now 22 after checking version). Happened when I dragged and dropped an image from another Chrome window. Worked fine when dropping a local image.
  - csaba 14y ago
    Yeah, with local images it works fine.
- hirenj 14y ago
  You have to click on the test images, rather than dragging the images onto the area!
tsahyt 14y ago
One of the test images with 4 cats on it was reported to have only 2 cats on it by the cat detector. Still, good work :)
TazeTSchnitzel 14y ago
It's been completely ineffective so far, but it's a nice idea! :3
Arvin2 14y ago
Failed to find cat on grass http://catoftheday.com/archive/2012/September/25.jpg http://catoftheday.com/archive/2012/September/25.jpg Failed to find cat yawning http://catoftheday.com/archive/2012/September/28.jpg http://catoftheday.com/archive/2012/September/28.jpg Found two cat faces with image of one houseplant and one cat http://catoftheday.com/archive/2012/September/28b.jpg http://catoftheday.com/archive/2012/September/28b.jpg Success with Sphynx cat http://catoftheday.com/archive/2012/September/27.jpg http://catoftheday.com/archive/2012/September/27.jpg
- willvarfar 14y ago
  > Found two cat faces with image of one houseplant and one cat http://catoftheday.com/archive/2012/September/28b.jpg http://catoftheday.com/archive/2012/September/28b.jpg Isn't there a second cat behind the houseplant?
  - esrauch 14y ago
    I thought you were kidding at first. The algorithm is apparently better than humans at detecting cats.
justindocanto 14y ago
Failed on a blatant cat face: http://d.pr/i/sAJK http://d.pr/i/sAJK
unbeli 14y ago
failed on this one: http://static.neatorama.com/images/2006-05/riley-maine-coon-cat.jpg http://static.neatorama.com/images/2006-05/riley-maine-coon-...
- jonmrodriguez 14y ago
  That's because Histogram of Oriented Gradients is not invariant to object orientation: http://en.wikipedia.org/wiki/Histogram_of_oriented_gradients#Theory http://en.wikipedia.org/wiki/Histogram_of_oriented_gradients... (second paragraph). This example app was trained on upright cats.
  - unbeli 14y ago
    Nope, still fails on a cat-upright version: http://i48.tinypic.com/2i0ejxl.jpg http://i48.tinypic.com/2i0ejxl.jpg
- mehulkar 14y ago
  That's not a cat, that's a dinosaur.
- ArekDymalski 14y ago
  I also fail to find a cat on this picture.
fidz 14y ago
what algorithm do you use? Is there universal algorithm for face detect (or some kind of "object detect")?
- seiji 14y ago
  For a good overview of methodology and terminology, start here http://www.idiap.ch/~rodrig/publications/pdf/rodrig-thesis-2006.pdf http://www.idiap.ch/~rodrig/publications/pdf/rodrig-thesis-2...
apu 14y ago
This work is based on a fairly old research paper. Since then, there has been significant progress on detecting dogs and cats more reliably. Two prominent groups that are working on it are Andrew Zisserman's group at Oxford: www.robots.ox.ac.uk/~vgg/publications/2012/parkhi12a/parkhi12a.pdf And Peter Belhumeur's group at Columbia University, who'll be presenting a new paper on detecting and recognizing dog breeds at the European Conference on Computer Vision (ECCV) in 2 weeks. [Peter was my PhD advisor] More generally, many people in computer vision are getting excited about "fine-grained visual categorization," which is about classifying things at roughly the "species" level. This is in contrast to a lot of the previous computer vision literature, which either focused on generic categories (e.g., people vs animal vs car vs rocket-propelled-grenade) or specific object/instance recognition (e.g., face recognition).
natmaster 14y ago
It said some random part of my tshirt was a cat. Then I dragged a picture of a cat, and it said 0 cats. :(
jontwist 14y ago
It looks like it loves ears on an upright cat. If the contrast between the angle of the ear and the background is clear it will eagerly draw boxes around them. I have lots of photos of my cat :
indiecore 14y ago
Finally, the tool the internet has been screaming for since 1990!
SideburnsOfDoom 14y ago
The drag-drop isn't working for me (Chrome Version 22.0.1229.79 on Unbuntu). It would be nice to have fallback to something simpler and more robust - i.e. a way to paste in a URL.
- bmj 14y ago
  Same with Chrome 22 on Windows 7.
- mistercow 14y ago
  I can drag from nautilus to Chrome in kubuntu (yes, this is a weird combination), but not from Chrome to Chrome, for whatever reason.
- TazeTSchnitzel 14y ago
  Are you dragging in images from web pages? Or files from Nautilus? Only the latter will work (speaking from experience)
  - SideburnsOfDoom 14y ago
    Ah thanks, it's images from other web pages. The rectangular border on the "drag an image here to find cats" area flashes like it's accepting the drop and then ... nothing.
vnlq 14y ago
Failed on drunken cat http://oi48.tinypic.com/1e9quq.jpg http://oi48.tinypic.com/1e9quq.jpg
martin1b 14y ago
When you're bored, make a face detection app for cats. Up next: Ass recognition for humans
rootedbox 14y ago
This thing fails too often. I need accurate face detection for cats; and I need it now!
tully 14y ago
Why is this link back from the dead? It was front page HN months ago
sproketboy 14y ago
Doesn't work.
digitalpacman 14y ago
Windows 7, chrome (newest), doesn't work, can't drag drop. Uncaught TypeError: Cannot read property 'type' of undefined demo.js:64 handleFiles demo.js:64 (anonymous function) demo.js:48 f.event.dispatch jquery.js:3 h.handle.i
ifix 14y ago
http://abstrusegoose.com/496 http://abstrusegoose.com/496

80 points by stevewilhelm 14y ago

aeurielesn 14y ago

Tom Cruise has definitely a catty smile - http://i.imgur.com/Mxbop.png http://i.imgur.com/Mxbop.png

ArekDymalski 14y ago
Of course. He's Cheshire: http://lordwhatsmymotivation.files.wordpress.com/2008/10/cheshire-cat-4.jpg http://lordwhatsmymotivation.files.wordpress.com/2008/10/che...

csaba 14y ago

This is not working for me, with the test images (or any other image). :\ Edit: Cannot read property 'type' of undefined. Demo.js:64

NameNickHN 14y ago
What browser and platform are you using? I'm using Firefox and it's working fine for me.
- csaba 14y ago
  Windows 8, chrome 22, opera next, opera 12.02, firefox 15. Hmm, actually in ie 10 it's doing it's stuff.
seanlinehan 14y ago
I have the same issue. I'm on Chrome + Ubuntu.
molukk 14y ago
Had the samme issue. Chrome 21 (and now 22 after checking version). Happened when I dragged and dropped an image from another Chrome window. Worked fine when dropping a local image.
- csaba 14y ago
  Yeah, with local images it works fine.
hirenj 14y ago
You have to click on the test images, rather than dragging the images onto the area!

tsahyt 14y ago

One of the test images with 4 cats on it was reported to have only 2 cats on it by the cat detector. Still, good work :)

TazeTSchnitzel 14y ago

It's been completely ineffective so far, but it's a nice idea! :3

Arvin2 14y ago

Failed to find cat on grass http://catoftheday.com/archive/2012/September/25.jpg http://catoftheday.com/archive/2012/September/25.jpg Failed to find cat yawning http://catoftheday.com/archive/2012/September/28.jpg http://catoftheday.com/archive/2012/September/28.jpg Found two cat faces with image of one houseplant and one cat http://catoftheday.com/archive/2012/September/28b.jpg http://catoftheday.com/archive/2012/September/28b.jpg Success with Sphynx cat http://catoftheday.com/archive/2012/September/27.jpg http://catoftheday.com/archive/2012/September/27.jpg

willvarfar 14y ago
> Found two cat faces with image of one houseplant and one cat http://catoftheday.com/archive/2012/September/28b.jpg http://catoftheday.com/archive/2012/September/28b.jpg Isn't there a second cat behind the houseplant?
- esrauch 14y ago
  I thought you were kidding at first. The algorithm is apparently better than humans at detecting cats.

justindocanto 14y ago

Failed on a blatant cat face: http://d.pr/i/sAJK http://d.pr/i/sAJK

unbeli 14y ago

failed on this one: http://static.neatorama.com/images/2006-05/riley-maine-coon-cat.jpg http://static.neatorama.com/images/2006-05/riley-maine-coon-...

jonmrodriguez 14y ago
That's because Histogram of Oriented Gradients is not invariant to object orientation: http://en.wikipedia.org/wiki/Histogram_of_oriented_gradients#Theory http://en.wikipedia.org/wiki/Histogram_of_oriented_gradients... (second paragraph). This example app was trained on upright cats.
- unbeli 14y ago
  Nope, still fails on a cat-upright version: http://i48.tinypic.com/2i0ejxl.jpg http://i48.tinypic.com/2i0ejxl.jpg
mehulkar 14y ago
That's not a cat, that's a dinosaur.
ArekDymalski 14y ago
I also fail to find a cat on this picture.

fidz 14y ago

what algorithm do you use? Is there universal algorithm for face detect (or some kind of "object detect")?

seiji 14y ago
For a good overview of methodology and terminology, start here http://www.idiap.ch/~rodrig/publications/pdf/rodrig-thesis-2006.pdf http://www.idiap.ch/~rodrig/publications/pdf/rodrig-thesis-2...

apu 14y ago

This work is based on a fairly old research paper. Since then, there has been significant progress on detecting dogs and cats more reliably. Two prominent groups that are working on it are Andrew Zisserman's group at Oxford: www.robots.ox.ac.uk/~vgg/publications/2012/parkhi12a/parkhi12a.pdf And Peter Belhumeur's group at Columbia University, who'll be presenting a new paper on detecting and recognizing dog breeds at the European Conference on Computer Vision (ECCV) in 2 weeks. [Peter was my PhD advisor] More generally, many people in computer vision are getting excited about "fine-grained visual categorization," which is about classifying things at roughly the "species" level. This is in contrast to a lot of the previous computer vision literature, which either focused on generic categories (e.g., people vs animal vs car vs rocket-propelled-grenade) or specific object/instance recognition (e.g., face recognition).

natmaster 14y ago

It said some random part of my tshirt was a cat. Then I dragged a picture of a cat, and it said 0 cats. :(

jontwist 14y ago

It looks like it loves ears on an upright cat. If the contrast between the angle of the ear and the background is clear it will eagerly draw boxes around them. I have lots of photos of my cat :

indiecore 14y ago

Finally, the tool the internet has been screaming for since 1990!

SideburnsOfDoom 14y ago

The drag-drop isn't working for me (Chrome Version 22.0.1229.79 on Unbuntu). It would be nice to have fallback to something simpler and more robust - i.e. a way to paste in a URL.

bmj 14y ago
Same with Chrome 22 on Windows 7.
mistercow 14y ago
I can drag from nautilus to Chrome in kubuntu (yes, this is a weird combination), but not from Chrome to Chrome, for whatever reason.
TazeTSchnitzel 14y ago
Are you dragging in images from web pages? Or files from Nautilus? Only the latter will work (speaking from experience)
- SideburnsOfDoom 14y ago
  Ah thanks, it's images from other web pages. The rectangular border on the "drag an image here to find cats" area flashes like it's accepting the drop and then ... nothing.

vnlq 14y ago

Failed on drunken cat http://oi48.tinypic.com/1e9quq.jpg http://oi48.tinypic.com/1e9quq.jpg

martin1b 14y ago

When you're bored, make a face detection app for cats. Up next: Ass recognition for humans

rootedbox 14y ago

This thing fails too often. I need accurate face detection for cats; and I need it now!

tully 14y ago

Why is this link back from the dead? It was front page HN months ago

sproketboy 14y ago

Doesn't work.

digitalpacman 14y ago

Windows 7, chrome (newest), doesn't work, can't drag drop. Uncaught TypeError: Cannot read property 'type' of undefined demo.js:64 handleFiles demo.js:64 (anonymous function) demo.js:48 f.event.dispatch jquery.js:3 h.handle.i

ifix 14y ago

http://abstrusegoose.com/496 http://abstrusegoose.com/496