is that from the air- the two plants look similar probably. I have never seen an okra plant in person, but looked it up and prob from the air they look similar.
That being said, the proper procedure and the safer way to do things is take the photos from the air to a judge and get a warrant.
While TRYING to get a warrant, do some research on the resident of the house. Cops have access to all kinds of info so its not like they couldn't figure out a little bit about this guy and who he lives with. Additionally, you have a couple cops keep an eye on the place while getting a warrant, because if he all of a sudden goes outside and tries to dispose of his "marijuana" plants, you can then stop him until the warrant is served.
Last, with warrant in hand and if you have no info to suspect the okra farmer is a bad guy (no history), you do what is called a "surround and call." Surround the property with a few cops, call inside and tell the occupant what is going on. Ask them to come outside and talk. 99% of the time they will. Tell them what you are doing and at that point you will find out what is going on. Easy, and real police agencies handle these things that way. If you still are not sure whether it is weed, find a dried portion of it and light it on fire. All cops know what it smells like while burning- hell fresh weed has its own unique smell too.
We have discovered several grow operations from the air via thermal temp measurement and water usage analysis (weed drinks lots of water and it will show on the meter). Anyway- that is how we handle those. I only remember about two of them turning out to be someone growing veggies/flowers in the house---all the rest were weed.
These guys were dumb and in a hurry. Bad police work.