Multiple images per HIT

Hello,

This is a great question. You can include multiple images in a single HIT. You can do this by copying the code for the crowd-image-classifier element and placing each iteration of it within the crowd-form tag. You would just need to make sure that each instance of that code is unique, by changing the variable and the name.

<crowd-image-classifier 
        src="${image2_url}"
        categories="['Cat', 'Dog', 'Bird', 'None of the Above']"
        header="Choose the correct category"
        name="category2">
             </crowd-image-classifier
>```

From there, you would add a second column into your CSV input file, corresponding to the new variable. To add more images, you would repeat this process.  
  
The system will create a HIT that has individual, separate image classification selections within itself. Each section will have its own submit button, but don't worry - if a Worker were to select one and not any of the others, the HIT wouldn't let them submit until there was a selection for each image classifier. Regardless of which submit button they choose, your results will reflect each of their selections.   
  
Unfortunately, if you wanted to just have multiple images displayed in the format of a single crowd-image-classifier element, it can't currently support that function.   
  
An alternative approach would be using the survey-link template as a starting point. This template still uses standard HTML, but you would need to build a custom HIT from the ground up to include multiple image references. In either case, you would still need to format your CSV input file with multiple columns corresponding to your image variables - you might be able to semi-automate the process of organizing those images by using Microsoft Excel to concatenate a list.  
  
I hope that helps! If you have any other questions or concerns please don't hesitate to contact us at mturk-requester-support@amazon.com.  
  
-Adam J