In the last few years the use of digital image has a grown tremendously at the same time tools to manipulate digital multimedia are also increasing such as Paint, Photoshop, Corel Draw, etc., and became very easy to use. ...

The main components of the Solar activity are solar flares, coronal mass ejections, high-speed solar wind, and solar energetic particles. Solar flares impact the Earth when they occur on the side facing our planet.

Face recognition has been an active research topic in recent years due to its numerous applications in surveillance, biometrics, human-computer interaction and social media. In this work, we focus on face identification, ...

In this thesis the TDC1 and TDC2 algorithms are proposed; those algorithms embed a watermark in a digital image. That watermark allows verifying if the content of the image has been manipulated; if so, it allows the original ...

Nowadays it is common to combine low-level and semantic data for image retrieval. The images are stored in databases and computer graphics algorithms are employed to get the pictures. Most of the works consider both aspects ...

Approximate similarity search algorithms based on hashing were proposed to query high-dimensional datasets due to its fast retrieval speed and low storage cost. Recent studies, promote the use of Convolutional Neural Network ...

Information Retrieval Systems have driven search engines with new technology that has improve queries in such way that most users are satisfied. IRS are concerned with representing, searching, and manipulating large ...

Nowadays, digital images are one of the most common ways of expression, propagating rapidly and throughout the web. This type of digital content can be easily copied and modified by non-authorized users, which can lead to ...