Methods and systems for segmenting images having sparsely distributed objects are
disclosed. A method may include: predicting object potential areas in the image using a
preliminary fully convolutional neural network; segmenting a plurality of sub-images
corresponding to the object potential areas in the image using a refinement fully
convolutional neural network, wherein the refinement fully convolutional neural network is
trained to segment images on a higher resolution compared to a lower resolution utilized by …