Contrast Enhancement Method Based on Gray and Its Distance Double-Weighting Histogram Equalization for 3D CT Images of PCBs

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2016/1529782/figures/1529782.fig.007a.svgz" name="1529782.fig.007a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Gray transformation curves of different algorithms</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2016/1529782/figures/1529782.fig.007b.svgz" name="1529782.fig.007b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Local enlargement of (a)</td></tr></table>

<div>Gray transformation curves of different algorithms.</div>

Mathematical Problems in Engineering

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Figure 7

Figure 7: Contrast Enhancement Method Based on Gray and Its Distance Double-Weighting Histogram Equalization for 3D CT Images of PCBs 