-
公开(公告)号：US20250166110A1
公开(公告)日：2025-05-22
申请号：US18726816
申请日：2022-12-23
Applicant: Purdue Research Foundation
Inventor： Young Kim , Hee Jae Jeon , Jungwoo Leem , Sang Mok Park , Yuhyun Ji
Abstract: A method of ascertaining identity, verification, or authentication of a product is disclosed which includes embedding a predetermined watermark on a host image, thereby generating an edible watermarked image, printing the watermarked image using edible ink on an attack-resistant edible substrate, affixing the printed substrate onto the product, providing a color reference chart along with the watermarked image, obtaining an image of the watermarked image from the product, establishing correspondence between the watermarked image and the color reference chart, correcting the obtained image based on the established correspondence, extracting the embedded predetermined watermark from the corrected watermarked image, and determining identity, verification, and authentication of the product by analyzing the extracted predetermined watermark of the watermarked image.
-
公开(公告)号：US20250114458A1
公开(公告)日：2025-04-10
申请号：US18885648
申请日：2024-09-14
Applicant: Purdue Research Foundation
Inventor： Young Kim , Joshua Kim , Jungwoo Leem
Abstract: A method of providing an edible printer dye for use as a predetermined pattern including a stealth quick response (QR) code taggant for an ingestible food or pharmaceutical product includes dissolving one or more edible infrared (IR) or near IR (NIR) light absorbing dyes in a carrier solution based on a predetermined concentration of the one or more IR or NIR light absorbing dyes, thereby generating an IR or NIR light absorbing dye solution, adding a mixture of dispersing agents to the dye solution, thereby generating an edible IR or NIR light absorbing dyes, loading the edible IR or NIR light absorbing dyes in any one of a printer cannisters, and loading other visible edible dyes in corresponding other printer cannisters.
-
Search Results
2
records
(took 0.016 seconds)
