TY-JOURNAL IS-41 TI-THE REVIEW PAPER ON “BI-LEVEL IMAGE PROCESSING” AU-Chealsha AB-Image processing is a rapidly growing area of computer science. Image processing is defined as analyzing and manipulating images with a computer. The goal of thesis is to improve the quality of degrade images using global thresholding. There are four algorithm and different algorithms gives different results on different type images. The research in image recognition usually includes two stages, “low-level” and “high-level”. CY-Solapur VL-I IS-V PY-2014 SN- PB-Laxmi Book Publication:Ashok Yakkaldevi ER