A machine learning attack against variable-length Chinese character CAPTCHAs.
Xing WuShuji DaiYike GuoHamido FujitaPublished in: Appl. Intell. (2019)
Keyphrases
- variable length
- chinese characters
- machine learning
- fixed length
- chinese character recognition
- character recognition
- hand written
- n gram
- data mining
- statistical dependencies
- bitstream
- natural language processing
- feature selection
- data analysis
- text classification
- spatio temporal
- computer vision
- chinese language
- convolutional codes
- font recognition
- knowledge discovery
- human motion
- d objects
- information extraction
- text compression