解密时只需将全部或若干个分存图片叠加，依靠人眼就可以直接识别出密图，不需要大量复杂的密码学运算。
Stacking all or part of these transparencies will allow visual recovery of the secret image with no special cryptographic computation, unlike almost any other cryptographic techniques.
高尔顿发明了一种将不同脸的部位相互叠加而创作合成图片的方法。
Galton devised a method of creating composite pictures in which the features of different faces were superimposed over one another.
上面的插图是一幅概念图片，显示了戴上这种眼镜会看到的情景：画面上叠加了一个字母E。
The illustration above is a concept image showing what it would look like with the lens displaying a digital overlay of the letter E.
图xx显示了一个由示例应用基于C2表格图片生成的图表数据叠加c - 2表单。
Figure xx shows a C-2 form generated by the sample application with the data overlaid on the C2 form image.
我们所要做的应该是将图片放置在幻灯片的顶层，然后将混合模式设为叠加，再将不透明度设为45%左右。
What we’re going to do instead is set it on top of the colored slide and set our blending mode to Overlay. Then throw your opacity to around 45%.
我们所要做的应该是将图片放置在幻灯片的顶层，然后将混合模式设为叠加，再将不透明度设为45%左右。
What we're going to do instead is set it on top of the colored slide and set our blending mode to Overlay. Then throw your opacity to around 45%.
最后，将颜色图层的混合模式设置为“叠加”。这将帮助把颜色融合到图片中，并让暗色的线条在下面显现出来。
Finally, set the blend mode of the colorized layer to "Overlay". This will help blend the color into the image and let the darker line work underneath show through.
此代码主要是用于在MATLAB中的图像叠加，现实中主要应用与全景图片。
This code is used mainly in MATLAB superimposed images of the reality that the main application and panoramic images.
这个地牢是在砂岩上凿刻而成的，地牢(图片下方)的位置在英国诺丁汉城堡(图片上方)的下面。地牢经过镭射扫描制成3d图片，并叠加在地面建筑图片上显现。
Carved from sandstone, the dungeon (foreground) beneath England's Nottingham Castle (top) -scanned in 3-d via lasers-is superimposed on an image of the aboveground buildings.
现在再在一个新的图层上打开这张强光混合的图片，将它的叠加方式更改为正片叠底，降低它的填充值，大约在30左右。
Now bring the hard mix jpeg in on a new layer, and change the blending mode to overlay and take the fill down to a low number, somewhere around 30.
选择图层的混合模式为“叠加模式”，将颜色融入到图片里。
Set the layer blend mode to "Overlay" to set the color into the image.
我使用了我网站的图标作为一个大的图片，叠加在页面上面，给这个页面一些创意，也让我把文字设计进来了。
I used the favicon of my website as a large graphic to overlay the spread which gives some movement to the page as well as provides me something to relate text to.
波士顿这片区域在网上就很显眼，我知道我可以在渲染底图上叠加背景建筑的图片。
This area of Boston is highly photographed online and I knew I would be overlaying images of the background buildings on top of the base rendering.
依照底下的图片设置图层的气势派头。咱们将次使用投影，内暗影，外闪光，斜面和浮雕和色彩叠加。
Follow the images below for the Settings of the Layer Style. We will be using Drop Shadow, Inner Shadow, Outer Glow, Bevel and Emboss and Color Overlay.
本软件也可用于叠加图片来增加暗弱目标的信号强度。
Astrometrica can also be used to stack a number of images, adding up the signal of a faint object.
这个图看起来像是叠加的，而不是一个图片，所以这是因为卫星在移动中（出了一个小差错）然后又被修正了吗？
The map looks like an overlay, not an image, so is this the satelite moving then being corrected?
层类型设置为叠加。选择一款现成笔刷，模仿大理石纹理将图片覆盖，并剪切掉眼睛所在的部分，如下。
Change the layer's type on Multiply. Take a ready brush now, imitating the marble veins and cover the entire picture with it. Cut the eye's orifice.
应用渐变叠加的圆圈并拖动最轻的地区，圆的上方，就好像下面的图片。
Apply a Gradient Overlay to the circle and drag the lightest area to the top of the circle, like the image below.
设置模糊图层样式为叠加，这将使图片光亮而且有自然发光的对比度。
Set the blending options of the blurred layer style to "Overlay", if your layers pallet. This will give a lot of bright yet naturally shiny contrast.
过一会儿，经过适当位移用以补偿小行星视运动的叠加后的图片就会出现。
After a while, the stacked images, shifted to compensate for the motion of the asteroid, will appear.
上图：液晶微滴层层叠加成的三维体可能对穿透它的光线产生全新而有价值的影响。NASA授权图片。
Above: 3-dimensional stacked layers of liquid crystal droplets could have some novel and useful effects on light that passes through them. Image courtesy NASA.
上图：液晶微滴层层叠加成的三维体可能对穿透它的光线产生全新而有价值的影响。NASA授权图片。
Above: 3-dimensional stacked layers of liquid crystal droplets could have some novel and useful effects on light that passes through them. Image courtesy NASA.
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