Genuine-product certification content creation device and integrated certification system using the same

A genuine-product certification content creation device comprising:

• a product information registrator configured to register product-related information for products to which genuine-product certification labels are to be attached;
• an identification number generator configured to generate identification numbers of the products according to the number of registered products;
• a watermark signal generator configured to generate a watermark signal to be inserted into content of each of the genuine-product certification labels on the basis of the identification numbers;
• and
• a watermark signal inserter configured to insert the watermark signal into the content according to a predetermined insertion intensity to generate genuine-product certification content,
• wherein the watermark signal generator is configured to convert each of the identification numbers into a spreading sequence pattern having a preset length and generate a watermark signal by randomly shuffling coefficient values in the spreading sequence pattern using a preset indexing key,
• wherein the watermark signal inserter is configured to divide the content into a plurality of blocks, calculates a local moment, which is a standard deviation, for each block of the content, applies a noise visibility function (NVF) filter to each block of the content to calculate an NVF value for a corresponding block, and determine the insertion intensity on the basis of the calculated local moment and the calculated NVF value,
• wherein the watermark signal inserter is configured to insert the watermark signal into each block of the content using the following equation:
• I′n,m=In,m+LocalMoment(n,m)*NVF(n,m)*SPSQ(n,m)*PW(i,j)
• where:
• I′n,m is content into which a watermark signal of a block having a size of n×m is inserted;
• In,m is original content having a block having a size of n×m;
• LocalMoment(n, m) is a local moment value of a corresponding block;
• NVF(n, m) is an NVF value of a corresponding block;
• SPSQ(n, m) is a watermark value to be inserted into a corresponding block;
• and
• PW(Pixel Weight)(i,j) is a weight of an (i,j)th pixel of a corresponding block and is a variation allowed for brightness of each pixel.