Thursday 30 July 2015

AI Triumphs at Pictionary-Like Sketch Recognition Task


Sketch-a-Net – Sketch Recognition Job

Softwareknown as Sketch-a-Net accurately identifies a sample of hand drawings which has been developed by researchers in London and this artificial intelligence system – AI, has beaten human at sketch recognition job.

The researchers recommended that their program could be adapted in helping police to match drawings of any suspects involved in any crime incidents, though according to computing experts,a lot of work needs to be done. Earlier sketch recognition attempts have examined drawings as completed work wherein specific features were extracted and thereafter classified in the same way the photos tend to be analysed.

The Sketch-a-Net could make use of the information about the order the hand strokes were made in. Whenever computer equipment is utilised in the development of a drawing, the follow-on data comprises of information with regards to when each line was made and where, wherein the team at Queen Mary University took the benefit of this added statistics.

 According to Dr Timothy Hospendales, from the University’s Computer Science department, states that the `normal computer vision image recognition looks at all of the pixels in parallel, though there is some additional information offered by the sequence and there is some regularity in how people do it’.

AI Software Achieved Score of 42.5% Accuracy

He has informed BBC that in the case of an alarm clock for instance, people usually tend to start by drawing the outline of the device before adding in the hands and then creating dashes to represent the hours. He further added that different shapes have `different ordering and that is what the network learns to discover’.

The drawings in the test were from a collection of around 20,000 sketches that were known as the TU-Berlin dataset that had been utilised in earlier image recognition jobs. On examining the image library, Sketch-a-Net seemed to have a certain edge in determining some of the drawings’ finer details.

For instance, it was capable of matching drawings of birds to the description `seagull, flying birds,standing bird and pigeon, than human were.Dr Hospendales states that it has been described as being capable of solving the game Pictionary which he presumed was a nice explanation. The AI software achieved a score of 42.5% accuracy at that definite task when compared with the volunteers’ 24.8%.

Used in Matching Sketches of Suspects

The researchers recommend that their software could be utilised in matching sketches of suspects. According to Prof Alan Woodward from the University of Surrey’s Computing Department, he defines the research as `promising’ but states that it could be some time before its potential could be realised.

He adds on, that `neutral nets have proved to be extremely successful in the past since the foundation for recognition and classifications systems. But the latest application could be obviously at the initial stage and quite a lot of developments and testing would be needed prior to seeing it emerge in a real world application.

He thinks it is one of the several areas in which they could see people using the AI in order to improve on human abilities’. The peer review research would be discussed further in September at the British Machine Vision Conference.

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