The second experiment on the corner matching efficiency: (a) Selected corners (using our algorithm) from two original images; (b) Corner matching by traditional RANSAC algorithm (NCC rough match); (c) Initial set of matching-corner pairs in our algorithm; (d) Final set of matching-corner pairs in our algorithm.

<p>The second experiment on the corner matching efficiency: (a) Selected corners (using our algorithm) from two original images; (b) Corner matching by traditional RANSAC algorithm (NCC rough match); (c) Initial set of matching-corner pairs in our algorithm; (d) Final set of matching-corner pairs in our algorithm.</p

Efficiency comparison between traditional RANSAC and our algorithm (I).

<p>Efficiency comparison between traditional RANSAC and our algorithm (I).</p

Qualitative and quantitative amalysis on three different algorithms (II).

<p>Qualitative and quantitative amalysis on three different algorithms (II).</p

Two initially matching-corner pairs, and , along with their respective midpoints: between and and between and .

<p>Two initially matching-corner pairs, and , along with their respective midpoints: between and and between and .</p

Experiments on the entire image-stitching algorithm (IV): (a) Video image 1; (b) Video image 2 (reference image); (c) Video image 3; (d) Generated video panoramic image.

<p>Experiments on the entire image-stitching algorithm (IV): (a) Video image 1; (b) Video image 2 (reference image); (c) Video image 3; (d) Generated video panoramic image.</p

Experiments on the entire image-stitching algorithm (II): (a) Video image 1; (b) Video image 2 (reference image); (c) Video image 3; (d) Generated video panoramic image.

<p>Experiments on the entire image-stitching algorithm (II): (a) Video image 1; (b) Video image 2 (reference image); (c) Video image 3; (d) Generated video panoramic image.</p

The Sigmoid function, where it is clearly demonstrated that the critical value range of is [−5, 5].

<p>The Sigmoid function, where it is clearly demonstrated that the critical value range of is [−5, 5].</p

Efficiency comparison between traditional RANSAC and our algorithm (II).

<p>Efficiency comparison between traditional RANSAC and our algorithm (II).</p

Comparison of stitching results from three different algorithms (I): (a) Traditional Harris detector; (b) The regional corner-selection algorithm in [9]; (c) Our presented algorithm.

<p>Comparison of stitching results from three different algorithms (I): (a) Traditional Harris detector; (b) The regional corner-selection algorithm in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0081182#pone.0081182-Zhao1" target="_blank">[9]</a>; (c) Our presented algorithm.</p

Experiments on the entire image-stitching algorithm (V): (a) Video image 1; (b) Video image 2 (reference image); (c) Video image 3; (d) Generated video panoramic image.

<p>Experiments on the entire image-stitching algorithm (V): (a) Video image 1; (b) Video image 2 (reference image); (c) Video image 3; (d) Generated video panoramic image.</p