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I am using haar cascade to detect my target objects and it does the job very well in my case 70% overall detection rate.

Here is an example of the detected objects:

Now i'd like to improve the detection such that it doesn't only detect the target objects region as a rectangle, i'd like to detect it accurately by its shape, is SURF is what i am looking for? "Given that the objects' shapes scope is wide "

Here is an album of the positive samples. Target objects in the images are the kidneys Positive Samples Album

And if so can i use SURF in conjunction with Haar cascade, is that a good practice "Would improve the accuracy?" or it would only slow down the process?

I am using haar cascade to detect my target objects and it does the job very well in my case 70% overall detection rate.

Here is an example of the detected objects:

Now i'd like to improve the detection such that it doesn't only detect the target objects region as a rectangle, i'd like to detect it accurately by its shape, is SURF is what i am looking for? "Given that the objects' shapes scope is wide "".

Please take a look of my positive samples album to get an idea of what i'm dealing with.

Here is an album of the positive samples. samples.

Target objects in the images are the kidneys

Positive Samples Samples Album

And if so can i use SURF in conjunction with Haar cascade, is that a good practice "Would improve the accuracy?" or it would only slow down the process?

I am using haar cascade to detect my target objects and it does the job very well in my case 70% overall detection rate.

Here is an example of the detected objects:

Now i'd like to improve the detection such that it doesn't only detect the target objects region as a rectangle, i'd like to detect it accurately by its shape, is SURF is what i am looking for? "Given that the objects' shapes scope is wide ".

Please take a look of my positive samples album to get an idea of what i'm dealing with.

Here is an album of the positive samples.

Target objects in the images are the kidneys

Positive Samples Album

And if so can i use SURF in conjunction with Haar cascade, is that a good practice "Would improve the accuracy?" or it would only slow down the process?