"Unsupported image type, must be 8bit gray or RGB image."

• face_recognition version: Latest, just installed today from pip3
• Python version: 3.5.2
• Operating System: Fresh install of Ubuntu

Description

I was just playing around with some of the example scripts, when I get this error:

sudo python3 main.py obama.jpg obama.jpg Traceback (most recent call last): File “main.py”, line 13, in <module> unkown_image_encoding = face_recognition.face_encodings(unknown_image)[0] File “/usr/local/lib/python3.5/dist-packages/face_recognition/api.py”, line 146, in face_encodings raw_landmarks = _raw_face_landmarks(face_image, known_face_locations) File “/usr/local/lib/python3.5/dist-packages/face_recognition/api.py”, line 105, in _raw_face_landmarks face_locations = _raw_face_locations(face_image) File “/usr/local/lib/python3.5/dist-packages/face_recognition/api.py”, line 89, in _raw_face_locations return face_detector(img, number_of_times_to_upsample) RuntimeError: Unsupported image type, must be 8bit gray or RGB image.

What I Did

import face_recognition
import sys

unknown_image = sys.argv[1]
print(sys.argv[1])
obama_image = face_recognition.load_image_file('obama.jpg')
obama_image_encoding = face_recognition.face_encodings(obama_image)[0]

biden_image = face_recognition.load_image_file('biden.jpg')
biden_image_encoding = face_recognition.face_encodings(biden_image)[0]


unkown_image_encoding = face_recognition.face_encodings(unknown_image)[0]

knownfaces = [
obama_image_encoding,
biden_image_encoding
]

results = face_recognition.compare_faces(knownfaces, unkown_image_encoding)
print(results)

if results[0] == True and results[1] == False:
    print("It's Obama!")
elif results[1] == True and results[0] == False: 
    print("It's Biden!")
else:
    print('Unknown person')

The weird thing is that I tried running it without the sys.argv and with the same files, it works.