Photoshop是照片编辑的黄金标准软件。它可以让您快速修饰旧照片或轻松创建全新的设计，并具有基本和高级功能，可为许多用户提供服务。美化旧照片的一种方法是在Photoshop(Photoshop)中删除或替换背景。
值得庆幸的是，Photoshop现在比以往任何时候都更容易使用，像这样的基本照片编辑(basic photo editing)变得容易。如果您想知道如何在Photoshop中删除背景，则需要遵循这些易于遵循的步骤。本指南最适合最新版本的Photoshop，但也可能适用于旧版本。
使用背景橡皮擦工具在 Photoshop 中删除背景(Removing A Background In Photoshop Using Background Eraser Tool)
如果您曾经在Photoshop中(Photoshop)从图像中剪切过对象(cut an object from an image)，那么您应该熟悉用于处理图像的许多步骤。对于背景，可以使用称为背景橡皮擦(Background Eraser)工具的特殊工具从Photoshop中的图像中删除背景。
这是最知名的Photoshop背景编辑方法，应该适用于旧版本的软件。
- 此工具是Photoshop工具箱菜单中的替代(Photoshop)橡皮擦(Eraser)工具之一，在左侧可见。您需要按住橡皮擦工具(Eraser tool )图标，然后从下拉菜单中选择背景橡皮擦工具。(Background Eraser)
- 您需要调整灵敏度设置，以便能够从图像中清晰地剪切背景。为此，请确保选择了背景橡皮擦(Background Eraser )工具，然后单击顶部菜单中的设置图标。(settings icon )这将为您提供一个下拉菜单，其中包含用于控制橡皮擦大小、硬度和工具公差的选项。
- 要更改的最重要的设置之一是公差(Tolerance )百分比，它在顶部菜单中可见。较低的容差值将意味着橡皮擦专注于更紧密的颜色集，而较高的值将一次擦除更多颜色。这会为您提供更高（或更低）的准确性，具体取决于您拥有的背景和您正在使用的图像。
- 对于复杂的背景，您还需要将Sample值设置为Continuous 。这意味着当您按住并在图像周围移动橡皮擦工具时，颜色Photoshop会专注于（并擦除）变化。(Photoshop)如果您有更少颜色的更基本的图像，您可能希望将其设置为不连续(Discontinuous)或查找边缘(Find Edges)。
- 一旦您准备好开始在Photoshop中删除背景，请小心地使用橡皮擦在图像的主要对象（您要保存的对象）和背景（您要删除的对象）之间进行刷涂。如果设置正确，这应该开始擦除背景，同时保持对象完好无损。
这将需要一些技巧（并且可能需要反复试验）才能成功删除背景。如果您在处理更复杂的背景时遇到问题，您可能希望改用“选择主题(Select Subject)”工具。
使用选择主题工具删除 Photoshop 背景(Using The Select Subject Tool To Remove Photoshop Backgrounds)
选择主题(Select Subject)工具是最近添加到Photoshop工具箱的工具，可让您选择图像的焦点。这由内置的人工智能技术提供支持，可以帮助分离图像的不同元素。
这对于背景去除特别有用。您可以选择要保存的图像的主要主题以删除其背后的背景，而不是手动刷掉背景。
- 要使用选择主题(Select Subject)工具，请确保选择(Select)工具在左侧的Photoshop工具箱菜单中处于活动状态。单击顶部菜单中的选择和遮罩(Select and Mask)按钮。
- 在选择和蒙版(Select and Mask)模式下，单击选择主题(Select Subject)按钮。内置 AI 会自动选择图像的主要主题，并在左侧显示预览。相应地调整右侧的设置（尽管默认设置应该适用于大多数用户），然后单击右侧菜单中的“确定”进行确认。(OK)
确认后，选择主题(Select Subject)工具检测到的图像背景将被移除并替换为白色背景。然后，您可以根据自己的喜好更换背景。
在 Photoshop 中替换背景(Replacing A Background In Photoshop)
您可以在Photoshop(Photoshop)中替换图像的背景，方法是先移除背景并使其保持透明。然后，您可以在图像中添加一个新图层(add a new layer)，放置在主要主题后面，以创建新背景。
如果您使用“选择主题(Select Subject)”工具，则会自动创建一个您可以编辑或替换的背景图层。这是替换背景的最佳方法，但是，如果您使用背景橡皮擦(Background Eraser)或替代方法来删除背景，您可以以类似的方式添加新的背景图层。
- 首先单击Select > Select and Mask以访问“选择主题(Select Subject)”工具。进入“选择和蒙版”(Select and Mask)菜单后，单击顶部菜单中的“选择主题”。(Select Subject)
- 大多数用户应该可以接受“选择主题(Select Subject)”菜单中的默认设置，但如果遇到问题，您可以调整这些设置。准备好后按OK确认。
- 删除背景后，您可以编辑或插入新的背景图层。在“图层(Layers )”选项卡中，将列出一个名为“背景”的图层。(Background )例如，您可以选择该图层并使用油漆桶(Paint Bucket )工具将背景颜色替换为单一颜色。
- 如果要删除图层，请右键单击背景(Background)图层，然后单击删除(Delete) 图层(Layer)选项。
- Layer > New > Layer Via Copy将另一个图像作为图层（保存在剪贴板中）插入。要创建一个完全空白的图层，请改为单击新建图层。(New Layer)
- 如果您决定将图像作为图层粘贴到剪贴板中，系统会要求您首先命名该图层。为图层命名（例如，新背景(New Background)），然后单击“确定(OK)”进行确认。
- 如果您想创建一个全新的图层，您还需要为该图层提供一个名称。单击(Click) 确定(OK)添加图层。
然后，您可以操作已插入的新图层。默认情况下，Photoshop应将其粘贴到分层画布的底部。这意味着背景层将放置在主要主题下方，替换之前的图像背景。
然后，您可以使用左侧的Photoshop工具箱菜单对该图层进行进一步更改（例如，更改颜色或添加新元素） 。
使用其他照片编辑工具(Using Alternative Photo Editing Tools)
如果您没有安装Photoshop，您可以使用其他照片编辑器从照片中删除背景。这可能比较棘手，但免费和开源的GIMP 照片编辑器(GIMP photo editor)应该能够通过使用魔术棒工具来完成这项工作。
如果您是Mac用户，则可以使用免费的 Mac 照片编辑器（(free Mac photo editor)如Photoscape X）从照片中删除背景。如果您在使用Photoshop、GIMP或其他照片编辑器时遇到问题，那么您可以使用像Remove.bg这样的在线服务来删除它。
How To Remove Or Replace a Background In Photoshop
Photoshop is the gold standard ѕoftware for photo editіng. It has thе scope to allow you to quickly touch up an old photo or create entirelу new designs with ease, with both basic and advanced features to serve many users. One way you can spruce up an old photo is to remove or replace the background in Photoshop.
Thankfully, Photoshop is now easier than ever to use, with basic photo editing like this made easy. If you want to know how to remove a background in Photoshop, you’ll need to follow these easy-to-follow steps. This guide will work best for the latest version of Photoshop, but may also work for older releases.
Removing A Background In Photoshop Using Background Eraser Tool
If you’ve ever cut an object from an image in Photoshop, you should be familiar with many of the steps used to manipulate images. For backgrounds, a special tool called the Background Eraser tool can be used to remove a background from an image in Photoshop.
This is the most well-known method for Photoshop background editing, and should work for older versions of the software.
- This tool is one of the alternative Eraser tools in your Photoshop toolbox menu, visible on the left-hand side. You’ll need to press and hold the Eraser tool icon, then select the Background Eraser tool from the drop-down menu.
- You’ll need to adjust the sensitivity settings to be able to cleanly cut the background from the image. To do this, make sure that the Background Eraser tool is selected, then click the settings icon in the menu at the top. This will provide you with a drop-down menu containing options to control the size of the eraser, hardness, and tolerance of the tool.
- One of the most important settings to change is the Tolerance percentage, which is visible in the top menu. A lower tolerance value will mean that the eraser focuses on a tighter set of colors, while a higher value will erase more colors at once. This gives you greater (or lower) accuracy, depending on the background you have and the image you’re working with.
- You’ll also want to set the Sample value to Continuous for complex backgrounds. This means that the color Photoshop focuses on (and erases) changes as you hold and move the eraser tool around your image. If you have a more basic image with fewer colors, you may wish to set this to Discontinuous or Find Edges instead.
- Once you’re ready to begin removing the background in Photoshop, carefully use the eraser to brush between the main object of the image (that you’re looking to save) and the background (that you’re looking to remove). If the setting is correct, this should begin to erase the background while leaving the object intact.
This will require some finesse (and possibly trial-and-error) to remove the background successfully. If you’re having trouble with more complex backgrounds, you may wish to prefer to use the Select Subject tool instead.
Using The Select Subject Tool To Remove Photoshop Backgrounds
The Select Subject tool is a recent addition to the Photoshop toolbox that allows you to select the focus of an image. This is powered by built-in AI technology that can help to separate different elements of an image.
This is particularly useful for background removal. Rather than manually brushing away a background, you can select the main subject of an image that you’re looking to save to remove the background behind it.
- To use the Select Subject tool, make sure that the Select tool is active in the Photoshop toolbox menu on the left. Click the Select and Mask button in the top menu.
- In the Select and Mask mode, click the Select Subject button. The built-in AI will automatically select the main subject of the image, with a preview shown on the left. Adjust the settings on the right accordingly (although the default settings should work for most users), then click OK in the right-hand menu to confirm.
Once confirmed, the image background that the Select Subject tool detected will be removed and replaced with a white background. You can then replace the background according to your tastes.
Replacing A Background In Photoshop
You can replace the background of an image in Photoshop by first removing the background and leaving it transparent. You can then add a new layer to your image, placed behind the main subject, to create a new background.
If you use the Select Subject tool, this automatically creates a background layer that you can either edit or replace. This is the best method for replacing a background but, if you use the Background Eraser or alternative method for removing a background, you can add a new background layer in a similar way.
- Start by clicking Select > Select and Mask to be able to access the Select Subject tool. Once you’re in the Select and Mask menu, click Select Subject in the top menu.
- The default settings in the Select Subject menu should be acceptable to most users, but you can tweak these if you’re having problems. Press OK to confirm once you’re ready.
- Once the background has been removed, you can edit or insert a new background layer. From the Layers tab, a layer named Background will be listed. You could, for instance, select this layer and use the Paint Bucket tool to replace the colour of the background with a single color.
- If you want to delete the layer, right-click the Background layer and click the Delete Layer option.
- You can then insert another image as a layer (saved in your clipboard) by clicking Layer > New > Layer Via Copy. To create an entirely blank layer, click New Layer instead.
- If you decide to paste an image in your clipboard as a layer, you’ll be asked to name the layer first. Give the layer a name (for instance, New Background) then click OK to confirm.
- If you want to create an entirely new layer, you’ll also need to provide a name for the layer. Click OK to add the layer.
You can then manipulate the new layer you’ve inserted. By default, Photoshop should paste this at the bottom of your layered canvas. This means the background layer will be placed below the main subject, replacing the previous image background.
You can then make further changes to this layer (for instance, changing the color, or adding new elements to it) using the Photoshop toolbox menu on the left.
Using Alternative Photo Editing Tools
If you don’t have Photoshop installed, you may be able to remove a background from a photo using an alternative photo editor. This may be trickier to do, but the free and open-source GIMP photo editor should be able to do the job by using the magic wand tool.
If you’re a Mac user, you may be able to use a free Mac photo editor like Photoscape X to remove a background from a photo. If you’re struggling with Photoshop, GIMP or another photo editor, then you may be able to use an online service like Remove.bg to remove it instead.
