Computer recognition of human faces


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This has yet to be tested in animals such as fish that do not live near humans, however, many social animals that recognize conspecific individuals are equally capable of discriminating those individuals under a range of viewing conditions. Fish present an interesting example as they can use colour patterns for recognition which are additionally affected by changes in water quality and lighting. Because different wavelengths are attenuated unequally in water, some colours within a pattern are affected more than others.

It is possible that the perceived complexity of human facial recognition may simply be an anthropogenic point of view and in fact other animals must also perform similarly complex pattern discrimination tasks under highly demanding conditions The archerfish used in this experiment were kept as described in Newport, et al. The fish had different levels of previous experience, however all subjects had at least been pre-trained to spit at stimuli presented on a computer monitor, following methods described in Newport, et al. The images in this database have had extraneous cues e.

Three aspects of the images in Experiment 2 were standardized. The experimental apparatus and stimulus presentation were as described in Newport, et al. A two-alternative forced choice 2-AFC procedure was used and images were displayed on each half of the monitor monitor coordinates: 0—, 0 , one of which was rewarded if hit. Fish were rewarded with one food pellet Cichlid Gold, Kyorin Co. Selection of the incorrect stimulus terminated the trial. Each training session consisted of 21—31 trials, depending on the individual level of motivation in a particular session. During testing, a pool of 44 faces was used as novel stimuli.

Trials with previously seen stimuli were excluded from analysis, therefore a testing block consisted of 44 trials. Training was run generally using the same procedures as in Experiment 1, however, no intermediary training stage was used as we felt it had little impact on the ability of the fish to complete the task. During testing, a pool of 18 novel faces was used.

A single session consisted of 30 trials, therefore more than one block was completed per session.

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For each experiment we used a Generalized Linear Mixed Model with a binomial distribution with log-link function. Fish ID and block number were included as random factors. In addition, Fish ID and block number were included as separate, crossed random factors. How to cite this article : Newport, C. Discrimination of human faces by archerfish Toxotes chatareus. Diamond, R. Why faces are and are not special: An effect of expertise.

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Computer recognition of human faces

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Face detection

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Computer Recognition of Human Faces - The Robotics Institute Carnegie Mellon University

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Human facial discrimination in horses: can they tell us apart? Anim Cogn 13 , 51—61 Dyer, A. Honeybee Apis mellifera vision can discriminate between and recognise images of human faces. J Exp Biol , — Jitsumori, M. Categorical discrimination of human facial expressions by pigeons: A test of the linear feature model.

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  • Computers Go Head-to-Head with Humans on Face Recognition - Scientific American.

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Asymmetrical interactions in the perception of face identity and emotional expression are not unique to the primate visual system. J Vision 11 Cogn Affect Behav Neurosci 12 , — Mechanisms of object recognition: what we have learned from pigeons. Front Neuro 8 , 1—22 Matsubara, H. Ornithological Sci. Belguermi, A. Pigeons discriminate between human feeders. Anim Cogn 14 , — Watanabe, S. Discrimination of individuals in pigeons. Bird Behav 9 , 20—29 Bradshaw, R. Slides of conspecifics as representatives of real animals in laying hens Gallus domesticus. Behav Process 28 , — Ryan, C.

Images of conspecifics as categories to be discriminated by pigeons and chickens: Slides, video tapes, stuffed birds and live birds. Behav Process 33 , — Nakamura, T. Domestic pigeons Columba livia discriminate between photographs of individual pigeons. Learn Behav 31 , — Domestic pigeons Columba livia discriminate between photographs of male and female pigeons. Learn Behav 34 , — Schlegel, T. Archerfish shots are evolutionarily matched to prey adhesion.

Curr Biol 16 , R—R Small circuits for large tasks: High-speed decision-making in archerfish. Science , — A spitting image: specializations in archerfish eyes for vision at the interface between air and water. Proc R Soc B Biol. Rischawy, I.

Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces
Computer recognition of human faces Computer recognition of human faces

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