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增加 jpg 输出质量的参数 & 一些问题 #13
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假设:
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我看懂了代码,个人理解是这样的:
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加了个jpg压缩的参数
png也有对应的IMWRITE_PNG_COMPRESSION,但那个有损得比较厉害,不太用到。
jpg的还是挺常用的。
做了一些测试
同水印大小不同源图大小
水印刚好是图源1/8
block的影响
同样源图用到最大水印 block4->1
同样源图/水印/仅改变block
其他一些问题
考虑自动根据源图生成参数
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