In this paper, we introduce a robust and secure digital signature scheme for image content authentication, by integrating content feature extraction, watermarking, cryptographic hashing, and digital ...

Image Processing: The project performs image processing tasks, including color quantization and histogram generation, to facilitate image search and analysis. User Interface: The project may include a ...

The human visual system focuses on active areas in images, such as people or vehicles. This project introduces a lossy encoder using image segmentation to guide quantization, improving compression ...

Colour quantization, the process of reducing the number of distinct colours in an image while maintaining visual fidelity, is a cornerstone of digital image processing and computer graphics.

Quantization is one of the core components in lossy image compression. For neural image compression, end-to-end optimization requires differentiable approximations of quantization, which can generally ...

The digital data acquisition system operates at a sampling rate of 250 MHz with a 14-bit resolution by Pixie-16 digitizer. Using waveform digitization technology, it converts analog signals into ...

Quantization is applied to both robust feature extraction and watermarking. Simulation results further demonstrate the practicability of our method in terms of system robustness and system security.