26/9/2014 Tencent, Inc. Intelligence Technology behind WeChat XIAO Bin Pattern Recognition Center, WeChat Product Department WeChat Intelligence Speech Technology WeChat Intelligence Image Technology 1
26/9/2014 Image Technology � Visual Search � Character Recognition � Bank card Recognition Image Technology “Scan” 2
26/9/2014 Image Technology Image Technology • WeChat 5.0 (Chinese version) 3
26/9/2014 Image Technology WeChat Scan Cover Visual Search Available on kinds of rigid plane: book cover, CD cover, poster, etc. � Recognition Accuracy Rate: 90% � response time: in < 1 seconds � Daily Usage amount: 500,000 Image Technology Image Visual Words Extract feature Quantize feature 4
26/9/2014 Image Technology Result Visual Words Feature Indexing and Feature Indexing and Geometric Verify Matching Database Image Technology Mobile Visual Search System Image Feature extraction Image Compression and Matching Network Geometric 识别结果展示 Display Verify 5
26/9/2014 Image Technology WeChat Image Platform(Collaboration with PKU and NTU) � Provide image recognition APIs for third-party developers � Free! Image Technology WeChat Scan translation Translate the English word caught by camera into Chinese, accuracy rate: over 92% � Mixed composing with Chinese and English, common font � Simple or complicated scene 6
26/9/2014 Image Technology Bank card recognition Recognize bank card number, bank name, layout, etc. � Accurate : accuracy rate is over 99% in a sample of 13000 bank card pictures � Quick response : 100ms processing time per frame in major smart phone � Huge Support : cover 97%+ embossing card and nearly 100% flat card Audio Fingerprinting Recognition WeChat Shake Music and TV show WeChat Shake >Music > recognize the song in database through a udio fingerprinting > show and play with lyric � Daily Usage amount: over 9million � Share to WeChat Moments: 10% � Recognition Rate: over 99% , Top level in the world � 3-5 seconds quick response 7
26/9/2014 WeChat Intelligence Thank you! 8
Recommend
More recommend
