Please draw shapes around regions that have a single material or texture. Some example materials: wood, steel, bricks, tiles, ceramic, plastic. If you don't know what to draw, floors, walls, and countertops are usually one material -- just be careful to exclude things on top.
Please make the region as tight as possible. Your shape should exactly follow the material boundary. Use the "adjust" button (or press 'A') to improve the shape boundary.
If there is something like a brick wall or tiled floor, please include all the tiles; do not draw a square around one tile. Large regions are preferable.
Example: if a wood cabinet has a metal handle, then the metal portion is a different material and should be excluded. If you are drawing a shape around a person, their skin and clothing should not be in two different shapes. You can also exclude regions by overlapping shapes. See the below examples.
Draw six polygons to complete the task.
We will reject HITs that do not follow these instructions.
To close the shape, you do not need to click near the first point. You can right-click to connect the first and last point.
After drawing a polygon, please adjust its edges so that it better fits the true boundary. When you are done adjusting, switch back to "Draw" mode to draw more polygons.
You can press the D and A key to quickly switch modes.
Scroll with the mouse wheel to zoom in. Click "Reset Zoom" or press escape to reset back to normal.
Press 'space' and drag with the mouse to move around in the image (panning). You can also move press the arrow keys to move.
If there is a mirror, draw a shape around the mirror surface itself, not the things that you can see in the reflection. Similarly, draw a shape around the window glass, and not the things you can see through the window.
We are building a database of materials from images on the web. This is part of ongoing research at Cornell University.
Thank you for participating!
Polygons must contain at least four points and cannot intersect themselves. Try adding more points so that the first and last point can connect.