Balas K Natarajan

Title: Innovations of Balas K Natarajan

Introduction

Balas K Natarajan is a notable inventor based in Los Gatos, CA. He holds a total of 9 patents that showcase his contributions to the field of technology and digital processing. His work primarily focuses on watermarking techniques and image filtering methods.

Latest Patents

One of his latest patents is a technique for watermarking digital objects. This innovative method involves identifying digital objects using a digital watermark. The process includes encrypting a message derived from the source data on the digital object to obtain an encrypted message digest. A watermark is then derived from this encrypted message digest and incorporated into the source data. The encryption is preferably performed using a public key encryption system. The message to be encrypted is obtained by performing a hash function on the source data, resulting in a message digest. This message digest is then encrypted with a signature encryption key to create the encrypted message digest. Notably, the watermark is designed to be resistant to cropping, scaling, and truncation.

Another significant patent involves a method of filtering images using image compressibility to reduce noise. In this method, an image is divided into subimages or blocks. An optimum threshold parameter is determined by applying a Singular Value Decomposition (SVD) transform to one of the blocks for various threshold values. A lossless compression algorithm is then used to determine the compressed size of the various transforms. The optimum threshold parameter is identified by finding the maximum of the second derivative of the compressed size concerning the log of the threshold parameter. The SVD transform is subsequently applied to all blocks using this optimum threshold value, and the transformed blocks are recombined to produce the filtered image.

Career Highlights

Throughout his career, Balas K Natarajan has worked with prominent companies such as Hewlett-Packard Company and Hewlett-Packard Development Company, L.P. His experience in these organizations has contributed significantly to his expertise in technology and innovation.

Collaborations

Some of his notable coworkers include Vasudev Bhaskaran and Konstantinos Konstantinides. Their collaboration has likely fostered a creative environment that encourages innovation and the development of new technologies.

Conclusion

Balas K Natarajan's contributions to the fields of watermarking and image processing highlight his innovative spirit and technical expertise. His patents reflect a commitment to advancing technology and improving digital object identification