Hello i didnt understand how does it became 5x5 7x7 effective pixel look up size please can you help me out?
Convolution Effective lookup size
Hey @gauthampkrishnan, for receptive field, plz go through this thread link, Building Convnets 1 - Filter Sizes, Receptive Fields, here i tried my best to make it clear how it works.
Also if you still face any doubt, go through this https://syncedreview.com/2017/05/11/a-guide-to-receptive-field-arithmetic-for-convolutional-neural-networks/ They also have best visualization for clarification.
Hope this resolved your doubt.
Plz mark the doubt as resolved in my doubts section. 
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