To ensure the security of wartermark, the wartermark image was scrambled beforeembedding and then expanded to the twifold size of the original image.
为保证水印的安全性,在嵌入之前先对水印图像作置乱处理,再将水印图像位扩展为原始图像的两倍大小。
Other PHP image functions include testing the image to see how large it is and, if the size is over a certain recommended limit, scaling the image to a more reasonable size for the auditor's screen.
其他的 PHP 图像功能包括对图像进行测试,看它有多大,如果大小超过某个推荐的限制,那么将图像缩小到一个对审计人员的屏幕更合理的大小。
You can see that identify displays a bunch of useful information about the image file, such as the size of the image in pixels, the color depth of the image, and the image format.
您可以看到 identify 显示了一串关于图像文件的有用信息,如以像素为单位的图像大小、图像的色深以及图像的格式。
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