Erasing complicated background picture in Photoshop

I will show how to remove background and delete background an image in Photoshop. How can you erase the background picture with Photoshop or separate a subject from the image to get a separate image with an optional background picture. You may have joined your image to another background picture. In this article, I will use the image of a frog sitting on a leaf. The leaf in green is a complex background picture in terms of color. So how can we separate this frog from the image? After reading this article, you will know more about tools as well as how to erase complicated background pictures with Photoshop.
We will describe basic steps to erase background picture of the picture through a combination of familiar tools. For example, with Magic Eraser Tool, you can completely erase simple background pictures, but how would you do with more complex ones? In previous articles, I talked thoroughly about how to blend color in Photoshop CS6 and Photoshop CC. ( In last post, I introduced “Instruction to quickly erasing background by Photoshop”
For instance, in the following picture

First of all, you right-click on Background Layer in Layers Palette frame and select Layer from Background… :

The program will automatically turn into Layer 0. Click on OK:

In Layers Palette, there is solely Layer 0. Click on L in order to select Lasso Tool. Recheck Control Palette on nearby vertical menu and adjust it so that it looks similar to the following image:

The most important thing here is to turn off Anti-Alias function, then proceed cutting along the edge of the image as following image:

Don’t worry if your edge is too rough since we can readjust it in the next steps:

After finishing this step, you press a key combination of Ctrl + Shift + J in order to change the selected part into a new layer with Layer Via Cut. You can erase Layer 0 and only work on the new layer you have just created. Continue pressing E in order to select the erase tool, change the mode into Pencil and adjust parameters as the following image:

Next, carry on erasing obvious redundant details on the picture frame:

Be careful with each movement in this step. Try to move your mouse smoothly and exactly. Select the parts near the image and avoid erasing adjacent lines of the main detail:

If you make a mistake, you can return to the previous step by pressing a key combination of Ctrl + Z or Ctrl + Alt + Z. After you finish this step, the image will be similar to the following image ( How to undo more in Photoshop CS6 )

It is unnecessary to erase all redundant details in this step. The important thing is to create the most precise border with the main detail of the processed image – here is the image of a frog. In order to quickly erase details of the outside part, press and keep Ctrl and select Layer 1:

Then press Delete in order to erase the selected outside part. Next, open Channels Palette table and select the symbol so as to create Alpha Channel:

Select the new Alpha Channel part (usually known as Alpha 1), simultaneously the program displays the list of equivalent layers. Press Ctrl + 4 in RGV layer:

And select Edit > Fill, change the mode from Contents to Use: White and click on OK:

Then, Alpha chanel along with the selected outside area is covered with white color. Press Ctrl + D in order to leave the selected area. Next, press and keep Gradient Tool in order to display Contextual Menu; then select Paint Bucket Tool and change Foreground Color to Black:

Select parts you do not want to fill with black color. Be careful with each detail:

Next, press Ctrl and select Alpha 1 Channel in order to select the new part you have just created:

Then, press Ctrl + ~ in order to return to RGB layer, select Layers Palette and press Ctrl + Shift + J in order to move the picture to a new layer. You can erase the old layer or hide it:

After this step is finished, the picture look like the following image:

We usually use the tool in order to adjust Color Fill and Adjustment Layer. It is useful for the elimination of small details that are mixed with the main picture. You can choose different background colors in order to recheck whether redundant details surrounding the main picture are available or not

Finshed

Thanks for reading !
Have a good job !