Inventor

STACH JOHN

US45 patents

⚠️ This page may combine multiple inventors who share the name “STACH JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

STACH JOHN

DIGIMARC CORP

Differential modulation for robust signaling and synchronization

Geometric enumerated watermark embedding for spot colors

Signal embedding and detection using circular structures in a transform domain of a media signal

Data hiding in media

Digital watermarks for unmanned vehicle navigation

Data hiding through arrangement of objects

Quantization-based data hiding employing calibration and locally adaptive quantization

Arrangement of objects in images or graphics to convey a machine-readable signal

Symmetry watermark

Segmentation in digital watermarking

Hiding geo-location data through arrangement of objects

Methods and arrangements for identifying objects

Encoded reference signal for digital watermarks

Reversible watermarking using expansion, rate control and iterative embedding

Methods and arrangements for identifying dermatological diagnoses with clinically negligible probabilities

Closed form non-iterative watermark embedding

Shared secret arrangements and optical data transfer

Quantization-based data embedding in mapped data

Content processing methods using reversible watermarking

Progressive image quality control using watermarking

Encoding and decoding signals for digital watermarking

Quantization-based data hiding employing calibration and locally adaptive quantization

Quantization-based data embedding in mapped data

Creating electronic forms through digital watermarking

Image processing methods using reversible watermarking

Methods and arrangements concerning dermatology

Methods and arrangements employing sensor-equipped smart phones

Quantization-based data embedding in mapped data

Reversible watermarking using expansion, rate control and iterative embedding

Encoding and decoding auxiliary signals

Differential modulation for robust signaling and synchronization

Shared secret arrangements and optical data transfer

Content processing methods using reversible watermarking

Arrangements for increasing detection confidence

Watermarking systems and methods

Watermarking systems and methods

STACH JOHN

Arrangement of objects in images or graphics to convey a machine-readable signal

Methods and systems for dealing with perspective distortion in connection with smartphone cameras

RODRIGUEZ TONY F

Digital watermarking methods, programs and apparatus

Digital watermarking methods, programs and apparatus

LOFGREN NEIL E

Transforming data files into logical storage units for auxiliary data through reversible watermarks

RHOADS GEOFFREY B

Arrangements for increasing detection confidence

TIAN JUN

Progressive image quality control using watermarking

SHARMA RAVI K

Encoding and decoding auxiliary signals

ALATTAR ADNAN M

Watermarking of data invariant to distortion