Hi! I have 2 images giving me black output no matter what I do with input resolution. I'm posting these here hoping someone check if it's me or it's something wrong with pictures.

In response to security issues associated with palm vein images during the recognition process, as well as the small key space and security concerns of chaotic systems, this paper proposes an image ...

Therefore, this article proposes a novel node localization approach that combines DV-Hop, least squares support vector machine (LSSVM), and expected distance estimation in order to effectively ...