I'm using Postman to help me generate an HttpRequest. I want to send an image blob (POST request) to my Flask server to be processed with OpenCV.
When I manually select the file to send as binary data (i.e. in Postman: Body -> binary -> choose files), I can then access the blob in Flask via request.data. However, when I try to send as form-data, I'm not sure how to access the blob and I get bad requests or other errors.
I'm sending the request as: (in Postman) Body -> form-data -> Key: "image", Value: . In Flask I'm trying to access the image via request.form['image'], according to what I read here., but this returns status 400 bad request.
Python code snippet:
import cv2 as cv
import numpy as np
from flask import Flask, request
app = Flask(__name__)
@app.route("/croprect", methods = ["POST"])
def crop_rect():
r = request
blob = r.form['image']
nparr = np.fromstring(blob, np.uint16)
img = cv.imdecode(nparr, cv.IMREAD_COLOR)
if __name__ == "__main__":
app.run()
Edit: I have already checked the answers in this post. I've tried request.form.get("image"), request.args.get("image", ""), but none of these are working and I'm definitely misunderstanding which method to use.
