用于语音识别前端信号预处理的快速傅里叶变换，提高语音信号识别率！-Fast Fourier transform for speech recognition front-end signal pre-processing, improve the recognition rate of voice signal

Skew detection and correction is very important task before pre-processing of an image and it is a major problem in scanned documents, if it not detected correctly it will lead wrong result in future during image analysis. During the scanning of th