前一步让对比度下降的有点大了，所以咱要再一次用一个灰度图来加大一点反差，但要保持色彩关系不变。
The above steps reduce the contrast slightly too much, so we restore this with another blended in grayscale layer to up the contrast but leave the colors relatively unchanged.
没有明暗的反差——而HDR可以通过增强对比度显示出照片中更多的细节。
There is nothing contrasting — and HDR allows you to, among other things, increase the amount of visible detail by enhancing contrast.
结论组织谐波显像能明显提高图象的反差及对比度，改善图象质量，使泌尿系结石的阳性显示率和诊断准确性明显提高。
Conclusions the tissue harmonic imaging evidently improves the contrast and imaging quality, so that the positive rate and diagnostic accuracy of calculus would be upgraded.
结论组织谐波显像能明显提高图象的反差及对比度，改善图象质量，使泌尿系结石的阳性显示率和诊断准确性明显提高。
Conclusions the tissue harmonic imaging evidently improves the contrast and imaging quality, so that the positive rate and diagnostic accuracy of calculus would be upgraded.
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