how to use bounding box to generate heatmap

when we use deep learning ,there will be bouding box A (x,y,w,h).

if I got many bounding box A1,A2,,,An, How can I transfer these bouding box and overlap together by heatmap?

Can anyone give me sugesstion?

[Giacomo]

I'm trying to do the same thing... With no success, by now.

[Ting Zheng]

Generate a MATRIX A, which is the same dimension as the image. Transfer A1,A2..An to the same size of matrix A, add all the area of bounding box, then use heatmap.

see the methods on the following paper. We have succeeded.

https://www.researchgate.net/publication/360057621_Recognition_of_void_defects_in_airport_runways_using_ground-penetrating_radar_and_shallow_CNN

https://www.researchgate.net/publication/339252542_Automatic_detection_of_moisture_damages_in_asphalt_pavements_from_GPR_data_with_deep_CNN_and_IRS_method?_sg%5B0%5D=eoaxW8ofOeBDjDgAqoqrIQg0wpAALnCurHkPRpJno7GdH-opuXp6R2A7snLA5RTYkuSnovlNh9LPcsXOu5dcYyo1LIZAfga99uDg8b7z.bREFkK0REH00OW3-Y86PPuIV6R5cfdeNc2MfcVu1wDhOOpYikAO4qcmYA7fStU8mS89xSJ8CcSkC5s1tNM4pJg

[Giacomo]

Thank you so much Ting!

I will go forward with your solution. :)