Jichuan Wang¹ and Yu Sun², ¹USA, ²California State Polytechnic University, USA

Many times when we create any design or drawing on a digital platform, we face the problem that lines we created couldn’t close up the shape correctly [1]. When we use the paint bucket tool, it fills the whole screen up with one click, and we need to re-look through the whole design again to find where it wasn't closed up correctly, not only taking up much of our time, but it’s also very annoying. By determining a rule for whether or not a shape is completely closed or open, this application checks whether the shapes we created were closed by going through each pixel and detecting if there are holes around it [2]. The application could be provided for anyone creating 2d designs on a computer whether for hobby or job, to save the time looking through the whole design again and find the errors with much time are really tiny.

Shapes, checker, fixer, pixel extraction.