Class: 845 (Syringe), Feature: 1928

MTurk Worker Annotations

We now show the responses from five crowdworkers used to annotate this class-feature pair as core or spurious. Workers first denote if the focus of the image is on the main object (core), or a separate or background object (spurious). They also mark their confidence on a scale of 1 to 5, and provide written explanations for their annotation.



Main Focus	Confidence	Explanation
Separate Object	3	Some of the pictures doesn't contain the main object, there red highlight is on other objects.
Main Object	5	The main focus is the syringe, and in these images the main focus is right on the syringe, which is useful and relevant.
Background	3	Most of the red regions are on the backgrounds of the syringe and not the syringe itself.
Main Object	3	Focus is on the tip of the syringe.
Main Object	4	The red region in the highlighted visual attributes focuses on the part of a syringe.


Votes for core: 3, Votes for spurious: 2. Feature is thus annotated as core for the class.