所以你有一张你的孩子或狗的精彩照片，你想通过删除背景并放入不同的背景来获得一些乐趣吗？或者您只是想删除图片的背景，以便在网站或数字文档中使用它？
有很多方法可以从图像中删除背景，所有这些方法都会给你不同的结果。最好的办法是在你的照片上尝试几种不同的方法，看看哪一种能给你带来最好的效果。
在这篇文章中，我将介绍三种方法：使用PowerPoint，使用名为ClippingMagic的网站，以及使用Android或 iOS 手机上名为Background Eraser的应用程序。
使用 PowerPoint 删除背景
对于安装了PowerPoint的桌面用户，您可以非常轻松地删除背景并微调您想要保留或删除的部分。要开始，请打开PowerPoint，单击插入(Insert)，然后单击图片(Pictures)。
选择您的图片，然后单击“插入(Insert)”按钮。将图片加载到幻灯片后，单击它以显示图片工具( Picture Tools)功能区。在最左侧，您将看到一个名为Remove Background的按钮。
当您单击此按钮时，它将自动尝试确定背景并以紫色突出显示。通常，这并不完美，您会看到您想要的部分以紫色突出显示，反之亦然(purple and vice versa)。
在我的示例中，PowerPoint没有正确检测到一只狗的脸和三只狗的鼻子！您可以通过单击左上角的“标记要保留的区域”按钮轻松更正此问题。(Mark Areas to Keep)然后，您只需单击并从一个位置拖动到您要保留的另一个位置。
当你放手时，它会自动找出要保留的部分。它可能最终会在图像的另一部分添加更多紫色，但您可以画另一条线来解决这个问题。在这里你可以看到我必须画几条线才能得到狗。
标记要删除(Mark Areas to Remove)的区域按钮的工作方式相同，除了它将标记要删除的区域为紫色。当您对编辑感到满意时，单击“保留更改(Keep Changes)”按钮。
背景现在应该已经消失了，你可以开始了！此时，您可以右键单击图像并选择另存为图片( Save as picture)。为了保持透明度，您需要确保将文件另存为PNG或GIF。JPEG 格式(JPEG format)不支持透明度。
您还可以在PowerPoint中添加新背景，方法是插入新图片，然后右键单击原始图片并选择(picture and choosing)置于前面( Bring to Front)。
在这里，我插入了一张云的图片，然后将我的狗图片移到了前面。当您使用PowerPoint删除背景时，它会自动使删除的部分透明(part transparent)，因此您不必手动使背景透明(background transparent)。
移除背景后，您可能会在主要拍摄对象的边缘看到一点背景。这在某些图像中确实很难删除，但是有一个很好的技巧可以使PowerPoint(PowerPoint)中的剪裁看起来更好。
右键单击图像并选择Format Picture。现在展开Soft Edges并增加几个点的大小。您可以在下面看到狗的图像看起来比原始图像更好。当您柔化边缘时，任何背景的残留物都将被移除。
使用 Clipping Magic 移除背景(Remove Background Using Clipping Magic)
如果您没有安装PowerPoint，您可以尝试一个名为ClippingMagic的网站，它几乎可以做同样的事情。将您的图像拖放到框中或单击(box or click) Upload Image。
现在您所要做的就是在图像上绘制绿色和红色部分。单击(Click)绿色加号图标并在您要保留的图像部分内绘制。接下来，单击红色减号图标(minus icon) 并在您要保留的部分之外绘制。主体周围会自动出现一条黄线。
在右侧，(hand side)您将立即看到图像的预览。如果您对此不满意，可以单击“清除(Clear)”按钮并重新开始。如果您觉得画笔太大，您也可以通过单击底部的画笔(Brush)按钮来调整画笔大小。(brush size)如果您需要擦除任何绿色或红色线条，请单击“橡皮擦(Eraser)”按钮。
总的来说，它工作得很好，而且超级容易使用。此外，您可以单击“边缘”按钮(Edges button)并添加平滑和羽化效果以消除背景的任何残留物。如果您正在处理头发，您知道摆脱数百根头发之间的背景是不可能的，但您可以单击“头发(Hair)”按钮并阅读有关如何解决该问题的说明。
该网站的唯一缺点是您必须付费才能下载图像的副本。不仅如此，他们还要求您订阅月度计划，而不是一次性收费，如果它真的很便宜，我不介意支付。
所以这是我建议你做的。单击底部的背景(Background)，然后选择白色。现在只需截取您的图像并将其保存到您的计算机。您现在可以使用PowerPoint之类的工具来使白色背景透明(background transparent)。这不是最好的解决方案，但如果您只需要删除一张图像的背景，它比必须订阅要好。
(Remove Background)使用背景橡皮擦(Background Eraser)删除背景
如果您现在从智能手机上拍摄大部分照片，那么下载一个可以帮助您删除背景的应用程序可能会更容易。以下是我为iOS 和 Android(iOS and Android)推荐的：
iOS – https://itunes.apple.com/us/app/background-eraser-superimpose/id815072622?mt=8
Android – https://play.google.com/store/apps/details?id=com.handycloset.android.eraser&hl=en
安装iOS 应用程序(iOS app)后，Background Eraser将为您提供如下所示的空白屏幕。
点击左上角有山的小图标。它会询问您是否允许访问您的照片。如果您同意，请继续并从您的相机胶卷(camera roll)中选择一张照片。
加载图像后，您将看到底部的按钮已启用。您可以根据需要裁剪和调整颜色等。在我们的例子中，我们想要点击Erase。
擦除工具将出现在底部。默认情况下，选择擦除(Erase)，如果您开始将手移到图像上，它将开始擦除。有几点需要注意。首先，宽度设置为最大，您可以使用滑块进行调整。
此外，还有一个偏移量，当您在屏幕上移动手指时，擦除将与您的手指偏移，这样您就可以实际看到您正在擦除的内容。您也可以使用滑块调整此偏移量。
接下来，恢复(Restore)将执行与擦除(Erase)相反的操作，并将恢复您将手指移过的图像的任何部分。TargetArea非常方便，您只需点击具有相似背景的区域并自动将其删除。这对于具有纯色的部分很有用。
TargetColor将允许您在图像中选择一种颜色并将其擦除到图像中显示的任何其他位置。最后，反向(Reverse)将反转选择。
使用这些工具的组合，您可以准确地删除您想要的图片部分。请注意，您也可以通过捏合来缩放(zoom)，这使得摆脱那些难以到达的部分变得非常容易。最后，完成后，点击完成(Done)链接，然后点击右上角的箭头。
您现在可以将图片保存到相机胶卷(camera roll)、通过电子邮件发送或分享到社交媒体。您还可以从各种尺寸中进行选择，并在PNG 和 JPEG(PNG and JPEG)之间进行选择。
希望您现在拥有轻松从图像中删除背景所需的所有工具！如果您有任何问题，请随时发表评论。享受！
How to Remove an Image Background
So you have a wonderful picture of yоur kids or dоgs and you want to hаve some fun by removing the background and dropping in a different background? Or maybe you jυst want to remove the background on a picture so that you can use it on a website or digital document?
There are many ways to go about removing a background from images and all of them will give you different results. The best thing is to try a couple of different methods on your picture and see which one gives you the best results.
In this post, I’m going to write about three methods: using PowerPoint, using a website called ClippingMagic and using an app on your Android or iOS phone called Background Eraser.
Remove Background using PowerPoint
For desktop users with PowerPoint installed, you can remove backgrounds very easily and fine-tune what parts you want to keep or remove. To get started, open PowerPoint, click on Insert and then click on Pictures.
Choose your picture and then click on the Insert button. Once your picture has loaded onto the slide, click on it to bring up the Picture Tools ribbon. At the far left, you will see a button called Remove Background.
When you click on this button, it will automatically try to determine the background and highlight it in purple. Normally, this is not perfect and you’ll see that portions of what you want are highlighted in purple and vice versa.
In my example, PowerPoint didn’t properly detect the face of one dog and the noses for all three! You can easily correct this by clicking on the Mark Areas to Keep button at the top left. Then you simply click and drag from one location to another that you want to keep.
When you let go, it will automatically figure out which part to keep. It might end up adding more purple in another part of the image, but you can just draw another line to fix that. Here you can see I had to draw a couple of lines in order to get just the dogs.
The Mark Areas to Remove button works the same way, except it will mark areas purple to be removed. When you are satisfied with your editing, click the Keep Changes button.
The background should now be gone and you’re good to go! At this point, you can right-click on the image and choose Save as picture. In order to preserve the transparency, you need to make sure you save the file as an PNG or as a GIF. JPEG format does not support transparency.
You can also add a new background while still in PowerPoint by inserting a new picture and then right-clicking on your original picture and choosing Bring to Front.
Here I inserted a picture of clouds and then moved my dog picture to the front. When you remove a background using PowerPoint it automatically makes the removed part transparent, so you don’t have to manually make the background transparent.
When you remove the background, you might see a little bit of the background around the edges of the main subject. This is really hard to remove in some images, but there is a nice trick that makes the cutout look a lot better in PowerPoint.
Right-click on the image and choose Format Picture. Now expand Soft Edges and increase the size a couple of points. You can see below how the image of the dogs looks better than the original one up top. Any remnants of the background will be removed when you soften the edges.
Remove Background Using Clipping Magic
If you don’t have PowerPoint installed, you can try out a website called ClippingMagic that pretty much does the same thing. Either drag and drop your image into the box or click Upload Image.
Now all you have to do is draw green and red sections on the image. Click on the green plus icon and draw just inside the section of the image you want to keep. Next, click on the red minus icon and draw just outside the section you want to keep. A yellow line will automatically appear around the main subject.
On the right hand side, you’ll see the preview of the image immediately. If you’re not happy with it, you can click the Clear button and start again. You can also adjust the brush size if you feel it’s too big by clicking on the Brush button at the bottom. If you need to erase any green or red lines, you click on the Eraser button.
Overall, it works really well and is super easy to use. Also, you can click on the Edges button and add smoothing and feathering effects to get rid of any remnants of the background. If you are dealing with hair, you know it can feel impossible to get rid of the background in-between hundreds of hairs, but you can click on the Hair button and read the instructions on how to fix that issue.
The only downside to this site is that you have to pay in order to download a copy of your image. Not only that, they require you to subscribe to a monthly plan instead of having a one-time charge, which I would not mind paying if it was something really cheap.
So here is what I suggest you do. Click on Background at the bottom and choose the white color. Now simply take a screenshot of your image and save it to your computer. You can now use a tool like PowerPoint to make the white background transparent. It’s not the best solution, but it’s better than having to subscribe if you need to just remove the background on one image.
Remove Background using Background Eraser
If you take most of your photos from your smartphone now, it will probably be easier to just download an app that can help you remove a background. Here are the ones I suggest for iOS and Android:
iOS – https://itunes.apple.com/us/app/background-eraser-superimpose/id815072622?mt=8
Android – https://play.google.com/store/apps/details?id=com.handycloset.android.eraser&hl=en
Once you install the iOS app, Background Eraser will give you a blank screen like shown below.
Tap on the small icon at the top left that has the mountain on it. It will ask you for permission to access your photos. When you agree, go ahead and select a picture from your camera roll.
Once your image has loaded, you will see the buttons at the bottom become enabled. You can crop and adjust the colors, etc if you like. In our case, we want to tap on Erase.
The erase tools will appear across the bottom. By default, Erase is selected and if you start to move your hand over the image, it will start erasing. There are a couple of things to note. Firstly, the width is set to max and you can adjust it by using the slider.
In addition, there is an offset so that when you move your finger across the screen, the erasing will be offset from your finger so that you can actually see what you are erasing. You can also adjust this offset using the slider.
Next, Restore will do the opposite of Erase and will bring back any part of the image you move your finger over. TargetArea is really handy and will allow you to simply tap on an area with similar background and remove it automatically. This is good for sections that have solid colors.
TargetColor will allow you to pick one color in the image and have it erased anywhere else it shows up in the image. Lastly, Reverse will invert the selection.
Using a combination of the tools, you can remove exactly the portions of the picture you want. Note that you can also pinch to zoom, which makes it really easy to get rid of those hard to get to parts. Finally, when you are done, tap on the Done link and then tap on the arrow at the top right.
You can now save the picture out to your camera roll, email it, or share it onto social media. You can also choose from various sizes and choose between PNG and JPEG.
Hopefully, you now have all the tools you need to remove a background from an image easily! If you have any questions, feel free to comment. Enjoy!
