grayscale image input

[vcvishal]

i changed the code in backend.py

i got this error

File "train.py", line 101, in main(args) File "train.py", line 70, in main anchors = config['model']['anchors']) File "C:\Users\vcvis\Desktop\yolo experiment\keras-yolo2-master\frontend.py", line 60, in init features = self.feature_extractor.extract(input_image) File "C:\Users\vcvis\Desktop\yolo experiment\keras-yolo2-master\backend.py", line 34, in extract return self.feature_extractor(input_image) File "C:\Users\vcvis\AppData\Roaming\Python\Python36\site-packages\keras\engine\base_layer.py", line 457, in call output = self.call(inputs, kwargs) File "C:\Users\vcvis\AppData\Roaming\Python\Python36\site-packages\keras\engine\network.py", line 564, in call outputtensors, , _ = self.run_internal_graph(inputs, masks) File "C:\Users\vcvis\AppData\Roaming\Python\Python36\site-packages\keras\engine\network.py", line 721, in run_internal_graph layer.call(computed_tensor, kwargs)) File "C:\Users\vcvis\AppData\Roaming\Python\Python36\site-packages\keras\layers\convolutional.py", line 171, in call dilation_rate=self.dilation_rate) File "C:\Users\vcvis\AppData\Roaming\Python\Python36\site-packages\keras\backend\tensorflow_backend.py", line 3650, in conv2d data_format=tf_data_format) File "D:\miniconda\lib\site-packages\tensorflow\python\ops\nn_ops.py", line 779, in convolution data_format=data_format) File "D:\miniconda\lib\site-packages\tensorflow\python\ops\nn_ops.py", line 839, in init filter_shape[num_spatial_dims])) ValueError: number of input channels does not match corresponding dimension of filter, 3 != 1

guide me thank you