Low-Light Image Enhancement Based on Guided Image Filtering in Gradient Domain

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/ijdmb/volume-2017/9029315/figures/9029315.fig.004a.svgz" name="9029315.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Original image</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/ijdmb/volume-2017/9029315/figures/9029315.fig.004b.svgz" name="9029315.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Image filtered by GIF</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/ijdmb/volume-2017/9029315/figures/9029315.fig.004c.svgz" name="9029315.fig.004c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Image filtered by WGIF</td></tr><tr class="fig-image" id="d"><td><object data="https://static.hindawi.com/articles/ijdmb/volume-2017/9029315/figures/9029315.fig.004d.svgz" name="9029315.fig.004d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Image filtered by GDGIF</td></tr></table>

<div>The difference between GIF, WGIF, and GDGIF.</div>

International Journal of Digital Multimedia Broadcasting

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Figure 4

Figure 4: Low-Light Image Enhancement Based on Guided Image Filtering in Gradient Domain 