Loop over images


I would like to process individual images from one column sequentially, so basically to loop over the raw of this column, so that I can apply the same processing with openCV/Python (actually to do a matchTemplate)

I though about using the "Table Raw to Variable" node to recover the image as a flow variable in the Python node, but the data type of the generated flow variable seems to be a unicode string that contains the information about the image (like when the renderer is set to multi-line string in the data viewer).

Any suggestion ?

Thanks !



Hi Jindil,

In general you can just use the Chunk Loop Start and Loop End nodes to create a loop to process rows one by one.

I recommend you take a look at the KNIP Python Extension though, they allow you to directly process your images with Python in KNIME.



Hi Gabriel,

Thanks a lot for introducing KNIP ! I will try that ASAP