Image Processing :: OCR Captcha Facial Recognition

AbstractThis idea is about a selected few range of a function processing applications. optic mention Recognition is the translation of images of handwritten, typewritten or printed text into machine-editable text. Then I find introduced the captcha that we so frequently encounter in common websites. An algorithm seek to solve or break a captcha has been explained. Face detection is a growing and an important tool in security these days. It must be applied before face actualization. There are m all methods for recognizing faces and a few of them are discussed in the paper.ContentsTopicPg No ascertain ProcessingOptical character recognitionCaptchaBraking CaptchaFace Detection algorithm for Face DetectionReferencesImage processingImage processing is any form of signal processing for which the input is an image, such as photographs or frames of video the output of image processing can be every an image or a set of characteristics or parameters related to the image. most(pre nominal) image-processing techniques involve treating the image as a two-dimensional signal and applying model signal-processing techniques to it.Typical OperationsAmong many other image processing trading operations areGeometric transformation such as enlargement, reduction, and rotation glossiness corrections such as brightness and contrast adjustments, quantization, or transition to a different color spaceDigital compositing or visual compositing (combination of two or more images). Interpolation, demosaicing, and recovery of a full image from a raw image format.Image editing (e.g., to increase the shade of a digital image)Image differencing (to determine changes between images)Image enrollment (alignment of two or more images)Image stabilizationImage segmentation(partitioning a digital image into multiple regions)Extending dynamic range by unite differently exposed images2-D object recognition with affine invarianceOptical character recognitionOptical character recognition , usually abbreviated to OCR, is the mechanized or electronic translation of images of handwritten, typewritten or printed text (usually captured by a scanner) into machine-editable text.OCR is a field of research in pattern recognition, artificial discussion and machine vision. Though academic research in the field continues, the cogitate on OCR has shifted to implementation of proven techniques. Optical character recognition (using visual techniques such as mirrors and lenses) and digital character recognition (using scanners and computer algorithms) were sooner considered separate fields. Because very few applications survive that use true ocular techniques, the OCR term has now been broadened to include digital image processing as well.Early systems required training (the provision of known samples of each character) to drive a specific font. Intelligent systems with a high degree of recognition accuracy for most fonts are now common.