Objective To accelerate local cost computation in live wire algorithm. Methods Two
methods were proposed to improve the efficiency of local cost computation including
synchronously calculating fD local cost components between the neighboring pixels using
correlation information and only calculating local costs of the processed pixels in the
optimal path searching. Results Compared with two other algorithms,the improved algorithm had
less workload of local cost computation,less running time and interactive segmentation time
for different image resolutions. Conclusions Improved algorithm of local cost computation
accelerated the speed of interactive segmentation of live wire algorithm especially in high
image resolution.
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