I have been doing some digging and have narrowed down the location in Kochi (Cochin) for caps 15-18 somewhat. Looking in the background on the right, one business appears to be "Kerala Medicals". I searched and found that Kerala Medicals is a pharmacy located at "Pavakulath Building, KK Road, Kaloor, Ernakulam, Kerala 682017 Near the HDFC Bank". That's not something I can plug in to Google Earth and go anywhere. However, further digging led me to believe that KK Road was Kaloor Kadavanthara Road. This is a fairly long road, so it wasn't much help. Then I looked up HDFC banks and there is a Kadavanthara branch at the south end of Kaloor Kadavanthara Road where it intersects with Sahodaran Ayyapan Road. It was a quick search, so other branches are possibly the right one.
Then I noticed on the right side of the caps a sign marked "Police Aid". I didn't have much time left to pursue this and did a quick search for Kochi Police Stations or Police Aid Stations. There is a police station at the far north end of Kaloor Kadavanthara Road where it intersects with Old NH (Old National Highway ?) also known as NH 47A, but I suspect that's not the same as a Police Aid station. I couldn't find addresses for Police Aid stations. Google Earth has a limited amount of pictures around Kochi, but from what I could see the south end of Kaloor Kadavanthara Road looked more like it matched up with caps 15-18.
I don't know if the location of the caps 15-18 is important or just atmospheric street scenes, but it appears to me to be on the mainland portion of Kochi at the south end of Kaloor Kadavanthara Road. I'll leave it as an exercise for the rest of you to pin it down any closer than that.