How to set the picture background to transparent

This paper mainly introduces the use of Windows System native “ drawing 3D” The specific method for the application to set the image background to be transparent .

1 Required applications

Windows10 The operating system comes with “ drawing 3D” Applications , As shown in the figure below ：

2 Methods to introduce

There is a blue background png Format picture , As shown in the figure below ：

The following describes how to set the background of this picture to transparent .

1. Use “ drawing 3D” The application opens the picture ;

2. stay “ drawing 3D” In the interface , Click on “ Magical choice ” Button （ This operation will select the whole picture by default ）;

3. Click... On the right side of the interface “ next step ”;

4. Select... On the right side of the interface “ Delete ” Icon , Then check it “ Auto fill background ” Options , As shown in the figure below ：

5. Click on the image above “ Completed ” Button , At this point, a view with the picture content separated from the background will be generated , As shown in the figure below ：

6. Click on the image above “ canvas ” Button , Then close the “ Show the canvas ” switch , When this is done , You will get a picture without canvas , As shown in the figure below ：

7. adopt “ menu ”->“ Save as ”->“ Images ” function , Get the picture to be saved , As shown in the figure below ：

8. （ Optional ） At this time, it can be based on actual needs , Click on the image above “ Adjust the angle and frame ” To resize the picture . for example , If you need a square picture , You can set the frame scale to “1:1”, As shown in the figure below ：

After completing the settings in the above figure , Click on “ determine ” Button , Back to the first 7 In the image to be saved interface of step .

9. Check... On the right side of the interface “ transparency ” Options , As shown in the figure below ：

Click... At the bottom right of the above interface “ preservation ” Button , You can get the picture with transparent background , As shown in the figure below ：

In the diagram above ,“before.png” Is the original picture with a blue background ,“after.png” Is the corresponding background transparent picture .

thus , The picture with transparent background is finished .

Last , To compare the difference between the background transparent picture and the original picture （ In other words, verify whether the modified image is indeed transparent to the background ）, have access to “ Screenshots and sketches ” The application opens the two pictures separately . Use “ Screenshots and sketches ” The contents of the two opened pictures are shown in the following figure ：

It can be seen from the above figure , The image generated in this example is indeed transparent in the background .

3 Special instructions

In some cases , We want the main content in the picture （ As in the example in this article “ Patrick Star ”） Try to occupy more space in the picture , That is to make the main content in the picture more “ Big ” some , that , There is a way to meet this need .

Return to Chapter 2 of this article 6 Step , Finish closing “ Show the canvas ” After the operation , Cancel “ drawing 3D” The application maximizes the effect , And then by adjusting “ drawing 3D” Application interface size , To adjust the proportion of main content in the final generated background transparent picture , As shown in the figure below ：

It can be seen from the above figure , Main content of picture “ Patrick Star ” The proportion of the whole picture has been significantly increased .

For the following operations, refer to the relevant steps in Chapter 2 , Finally, the generated background is transparent “after2.png” And generated in Chapter 2 “after.png” Contrast figure , As shown in the figure below ：

As you can see in the picture above ,“after2.png” The main content of is obviously larger than “after.png” The corresponding content in .

Last , Remind everyone , We can also adjust the original image （ namely “before.png”） The proportion of main content in , To indirectly adjust the proportion of main content in the final generated background transparent picture , You can use these methods flexibly according to the actual situation .