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 Pattern Recognition


Controversial Chinese 'gait recognition' technology being used to identify people by their WALK

Daily Mail - Science & tech

Chinese authorities have begun deploying a new surveillance tool: 'gait recognition' software that uses people's body shapes and how they walk to identify them, even when their faces are hidden from cameras. Already used by police on the streets of Beijing and Shanghai, 'gait recognition' is part of a push across China to develop artificial-intelligence and data-driven surveillance. However, it's raised concerns among critics about how far the technology will go. China is deploying a new surveillance tool: 'gait recognition' software that uses people's body shapes and how they walk to identify them, even when their faces are hidden. Chinese startup Watrix's software extracts a person's silhouette from video and analyzes the silhouette's movement to create a model of the way the person walks.


Chinese 'gait recognition' technology identifies people by how they walk

The Japan Times

BEIJING โ€“ Chinese authorities have begun deploying a new surveillance tool: "gait recognition" software that uses people's body shapes and how they walk to identify them, even when their faces are hidden from cameras. Already used by police on the streets of Beijing and Shanghai, "gait recognition" is part of a push across China to develop artificial-intelligence and data-driven surveillance that is raising concern about how far the technology will go. Huang Yongzhen, the CEO of Watrix, said that its system can identify people from up to 50 meters (165 feet) away, even with their back turned or their face covered. Such a capability can fill a gap in what is offered by facial recognition, which needs close-up, high-resolution images of a person's face in order to work. "You don't need people's cooperation for us to be able to recognize their identity," Huang said in an interview in his Beijing office.


Detecting fake face images created by both humans and machines

#artificialintelligence

Researchers at the State University of New York in Korea have recently explored new ways to detect both machine and human-created fake images of faces. In their paper, published in ACM Digital Library, the researchers used ensemble methods to detect images created by generative adversarial networks (GANs) and employed pre-processing techniques to improve the detection of images created by humans using Photoshop. Over the past few years, significant advancements in image processing and machine learning have enabled the generation of fake, yet highly realistic, images. However, these images could also be used to create fake identities, make fake news more convincing, bypass image detection algorithms, or fool image recognition tools. "Fake face images have been a topic of research for quite some time now, but studies have mainly focused on photos made by humans, using Photoshop tools," Shahroz Tariq, one of the researchers who carried out the study told Tech Xplore.


Google Lens comes to image search in the US

Engadget

Back in September, Google promised to bring Lens to image search -- now, the feature is live in the US for English language queries. The object recognition techology can help you find out more about particular items within a photo you're looking at. If you want to try it out, do a Google search on mobile and go to the Images tab. Say, you want to look for a new sofa -- simply search for "sofas," go to Images and tap on one of the results. You'll find the new Lens icon underneath the photo next to the Share option, and tapping it will make dots appear on objects you can explore further.


Supervised Classification Methods for Flash X-ray single particle diffraction Imaging

arXiv.org Machine Learning

Current Flash X-ray single-particle diffraction Imaging (FXI) experiments, which operate on modern X-ray Free Electron Lasers (XFELs), can record millions of interpretable diffraction patterns from individual biomolecules per day. Due to the stochastic nature of the XFELs, those patterns will to a varying degree include scatterings from contaminated samples. Also, the heterogeneity of the sample biomolecules is unavoidable and complicates data processing. Reducing the data volumes and selecting high-quality single-molecule patterns are therefore critical steps in the experimental set-up. In this paper, we present two supervised template-based learning methods for classifying FXI patterns. Our Eigen-Image and Log-Likelihood classifier can find the best-matched template for a single-molecule pattern within a few milliseconds. It is also straightforward to parallelize them so as to fully match the XFEL repetition rate, thereby enabling processing at site.


Compressively Sensed Image Recognition

arXiv.org Machine Learning

Compressive Sensing (CS) theory asserts that sparse signal reconstruction is possible from a small number of linear measurements. Although CS enables low-cost linear sampling, it requires non-linear and costly reconstruction. Recent literature works show that compressive image classification is possible in CS domain without reconstruction of the signal. In this work, we introduce a DCT base method that extracts binary discriminative features directly from CS measurements. These CS measurements can be obtained by using (i) a random or a pseudo-random measurement matrix, or (ii) a measurement matrix whose elements are learned from the training data to optimize the given classification task. We further introduce feature fusion by concatenating Bag of Words (BoW) representation of our binary features with one of the two state-of-the-art CNN-based feature vectors. We show that our fused feature outperforms the state-of-the-art in both cases.


AI still fails on robust handwritten digit recognition (and how to fix it)

#artificialintelligence

We learn such a generative model for each digit. Then, when a new input comes along, we check which digit model can best approximate the new input. This procedure is typically called analysis-by-synthesis, because we analyse the content of the image according to the model that can best synthesise it. That's really the key difference: feedforward networks have no way to check their predictions, you have to trust them. Our analysis-by-synthesis model, on the other hand, looks whether certain image features are really present in the input before jumping to a conclusion.


Dropbox text recognition makes it easier to find images and PDFs

Engadget

There's nothing worse than having to pore over a pile of PDFs containing documents scanned as images when you quickly have to find a specific file. Dropbox is making it easier to do that by introducing automatic image recognition, which extracts texts from photos and PDFs and makes them searchable. According to the cloud storage provider, there are 20 billion image and PDF files stored on Dropbox. Around 10 to 20 percent of those are photos of documents, so the new feature can be very, very useful. To look for a specific photo or PDF, you simply have to type in a keyword or phrase like you would on a search engine.


Jail Is First in Idaho to Have Iris Recognition System

U.S. News

Authorities say the Canyon County jail is the first in Idaho to implement an iris biometric identification recognition system when booking inmates into custody, a process that is more accurate and faster than fingerprinting.


High-Accuracy Population-Based Image Search - DZone AI

#artificialintelligence

Established in 2018, the Machine Intelligence Technology Laboratory comprises of a group of outstanding scientists and engineers, with research centers located in Hangzhou, Beijing, Seattle, Silicon Valley, and Singapore. Machine Intelligence Technology Laboratory is Alibaba's core team responsible for the research and development of artificial intelligence technologies. Relying on Alibaba's valuable massive data and machine learning/deep learning technologies, the lab has developed image recognition, speech interaction, natural language understanding, intelligent decision-making, and other core artificial intelligence technologies. It fully empowers Alibaba Group's important businesses such as e-commerce, finance, logistics, social interaction, and entertainment, and also provides outputs to ecosystem partners to jointly build a smart future. Image Search is an intelligent image search product that enables search by image using image recognition and search functions, based on deep learning and large-scale machine learning technologies.