It is of great importance to preserve the privacy of biometric data stored in the central database server. This paper explores the possibility of using visual cryptography for imparting privacy to biometric data such as f ingerprint images, iris codes, and face images. Visual cryptography is a secret sharing scheme where a secret image is encrypted into the shares which independently disclose n...

The visual system transforms complex inputs into robust and parsimonious neural codes that efficiently guide behavior. Because neural communication is stochastic, the amount of encoded visual information necessarily decreases with each synapse. This constraint requires that sensory signals are processed in a manner that protects information about relevant stimuli from degradation. Such selectiv...

Population codes in the brain have generally been characterized by recording responses from one neuron at a time. This approach will miss codes that rely on concerted patterns of action potentials from many cells. Here we analyze visual signaling in populations of ganglion cells recorded from the isolated salamander retina. These neurons tend to fire synchronously far more frequently than expec...

Selective visual attention enables organisms to enhance the representation of behaviorally relevant stimuli by altering the encoding properties of single receptive fields (RFs). Yet we know little about how the attentional modulations of single RFs contribute to the encoding of an entire visual scene. Addressing this issue requires (1) measuring a group of RFs that tile a continuous portion of ...

The first CNN technology-based, high performance industrial visual computer called Aladdin is reported. The revolutionary device is the world premier of the ACE4k Cellular Visual Microprocessor (CVM) chip powering an industrial visual computer. One of the most important features of the Aladdin system is the image processing library. The library reduces algorithm development time, provides effic...

Quick response (QR) codes are usually scanned in different environments, so they must be robust to variations illumination, scale, coverage, and camera angles. Aesthetic QR improve the visual quality, but subtle changes their appearance may cause scanning failure. In this article, a new method generate scanning-robust aesthetic is proposed, which based on module-based probability estimation mod...