b) and d) show the corresponding blurred FG masks. a) and c) show two video patches consisting of 7 frames cropped around a spatial region. The BG model used in the experiments is a very simple mean color value per pixel.įigure 3: Example blurred FG masks which are concatenated and vectorized into a feature vector. The FG masks are computed using a background (BG) model that is updated as the video is processed (see Figure 3). ANOMALY 2 DEMO PATCHThe foreground (FG) mask variation uses blurred FG masks for each frame in a video patch as a feature vector. The only differences between the two variations are the feature vector used to represent each video patch and the distance function used to compare two feature vectors. The distance to the nearest exemplar serves as the anomaly score. In the anomaly detection phase, the testing video is split into the same regions used during training and for each testing video patch, the nearest exemplar from its spatial region is found. We call these representative video patches, exemplars. In the model-building phase, the training (normal) videos are used to find a set of video patches (represented by feature vectors described later) for each spatial region that represent the variety of activity in that spatial region. The baseline algorithm has two phases: a training or model-building phase and a testing or anomaly detection phase. This figure shows nonoverlapping regions, but in our experiments we use overlapping regions. See Figure 2 for an illustration.įigure 2: Illustration of a grid of regions partitioning a video frame and a video patch encompassing 4 frames. In the experiments we choose H=40 pixels, W=40 pixels, T=4 or 7 frames, and s = 20 pixels. The new algorithm is very straightforward and is based on dividing the video into spatio-temporal regions which we call video patches, storing a set of exemplars to represent the variety of video patches occuring in each region, and then using the distance from a testing video patch to the nearest neighbor exemplar as the anomaly score.įirst, each video is divided into a grid of spatio-temporal regions of size H x W x T pixels with spatial step size s and temporal step size 1 frame. We describe two variations of a novel algorithm for video anomaly detection which we evaluate along with two previously published algorithms on the Street Scene dataset (described later). The blue square represents the ground truth labeled anomaly. Experience alternative endings dependent upon your approach to enemy machines in the campaign.ġ1 bit studios S.A.Figure 1: Example frame from the Street Scene dataset and an example anomaly detection (red tinted pixels) found by our algorithm (a jaywalker).Dive into a beautifully rendered world, thanks to the team’s upgraded and improved visual engine.With over million tactical combinations to build your squad, your options in combat are nearly endless. Carve your own path to victory and create your ultimate battle squad.Fight across a post-apocalyptic world in a new single-player campaign that offers a more intense strategy experience than the acclaimed original.Play as the towers and destroy the humans or lead the humans to annihilate the alien towers. Engage in a multiplayer experience unique to Anomaly 2: tower defense vs.Morph your troops into war mechs to discover the new face of strategy: each unit has a different mech form with various abilities to help you overcome specific combat situations.The core elements of the original – tactical planning and the on-field Commander to support troops in combat – are spiced up by a number of important new features. Your convoy, Commander, is called Yukon.Īnomaly 2 takes the RTS tower-offense concept from Anomaly Warzone Earth to a new level. Since the war, the roles have been reversed: now our species seems to be the Anomaly on a machine-controlled planet. Banded together in huge convoys, they search the frozen tundra for food and supplies. In the years following the invasion of Earth in 2018, the planet is overrun by alien machines. Maintaining the core elements of the original, Anomaly 2 adds new features to the single-player campaign and finally puts your skills to a test in a completely unique experience: the dynamic tower defense vs. Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth.
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