A Block Compression Method for Fingerprint Image Storing


Storage of fingerprint image databases needs allocation of huge secondarystorage devices. To reduce the increasing demand on storage space, efficient datacompression techniques are badly needed. In addition to that, the exchange offingerprint images between governmental agencies could be done fast. Thecompression algorithm must also preserve the original information in the originalimage. Image compression is the application of Data compression on digitalimages. In effect, the objective is to reduce redundancy of the image data in orderto be able to store or transmit data in an efficient form. It involves reducing thesize of image data files, while retaining necessary information. The reduced file iscalled the compressed file and is used to reconstruct the image, resulting in thedecompressed image. The original image file, before any compression isperformed, is called the uncompressed image file. This paper is concerned withcompression method of fingerprint image without losing the important features ofthese images (lossless method), by using (2 × 2), (3 × 3) Block CompressionMethod. This proposed method done by compressing the fingerprint (FP) image,and decompressing the image for the twice previous methods. And then comparethe result which come from experimental results for (size of image, quality ofimage, thickness of curve), and find the relationship between them.