No module named 'object_detection'

[saranzeb]

giving me this error "No module named 'object_detection'"
I tried to install
conda install tensorflow-object-detection-api

but cannot install in my virtual envr of conda i am wondering this error is due the this module or i am not giving a proper path to some directories secondly what should be the model for which we have to put the path in directory of file 'id_card_detection_image'
under

Name of the directory containing the object detection module we're using

MODEL_NAME = 'model'
IMAGE_NAME = 'test_images/image1.png'