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