PPTLens: Create Digital Objects with Sketch Images

In this work, we introduce the PPTLens system to convert sketch images captured by smart phones to digital owcharts in PowerPoint. Di erent from existing sketch recognition system, which is based on hand-drawn strokes, PPTLens enables users to use sketch images as inputs directly. It’s more challenging since strokes extracted from sketch im- ages might not only be very messy, but also without tem- poral information of the drawings. To implement the ‘Im- age to Object’ (I2O) scenario, we propose a novel sketch image recognition framework, including an e ective stroke extraction strategy and a novel o ine sketch parsing algo- rithm. By enabling sketch images as inputs, our system makes owchart/diagram production much more convenient and easier.