Efficientdet

[Manojkumarmuru]

1. Dependence of test cases (especially those that check the Efficientdet architecture) on .hdf5/JSON/.npy or any other types of files removed.
2. Test case to check the functionality of the anchor box building method added. The test includes the following:

• Checks the range of coordinates of the center of anchor boxes. [Checks if the boxes are valid.]
• Checks the sign of anchor box width and height. [Checks if the boxes are valid.]
• Checks if the anchor boxes are symmetrically distributed along the X and Y direction.
• Checks if the method builds anchor boxes of the given aspect ratio.
• Checks if a correct number of anchor boxes are built for a given input feature size.