Gimp usage record

After the software is installed , You need to install an automatic repair and completion plug-in , Very easy to use

sudo apt-get install gimp-resynthesizer

Dig and turn the pointer or move the position

（1） Create a new layer copy

（2） Free choice of tools ==》 Select pointer , then Ctrl +C ==》Ctrl + V 

Generate floating selection , Then click + Create a new layer , Make the floating selection into the pasted layer

（3） Rotate the pointer ==》 Free choice of tools , Just select the previous pointer

（4） Filter ==》 enhance ==》HealSelection

    choice ==》 nothing

（5） Color pick tool

Ctr+ Click anywhere to pick the color ==》 Brush tool painting

attach ： Matting operation

GIMP Provides a variety of selection tools , Can be used to extract part of an image from a whole image . When the part to be picked is very different from other parts , Consider using the foreground selection tool for matting .

1.  Open the image to be cut .

2.  Use the foreground selection tool .

       In the toolbar on the left , Click the foreground selection tool . You can see from the tool options , There are continuous options , Select this option , Then only choose the prospects connected ; If there is the same as the selected foreground 、 But the discontinuous range , Then make no choice ; otherwise , Even if the foreground is not connected , Will be chosen . Another option to note is smoothness , The smaller its value , The more accurate the selection of foreground color ; The larger its value , The more ranges close to the foreground are selected .

3. Roughly delineate the matting range .

Use the foreground selection tool , Around the range you need to pick , Roughly delimit a range . When the delimited range is closed （ That is, the last point coincides with the starting point ）, The range is fixed , The image outside the range is covered with a translucent blue .

4. Mark foreground color .

After the rough area is delimited and closed , The mouse becomes a brush ; We choose a position among the flowers that need to be picked to start , Hold down the left mouse button 、 Drag in the foreground .

5. Determine the constituency .

press return , Ant lines appear around the foreground , It means that the constituency has been determined ; But there are also places that have not been selected or wrongly selected .

6. Fine tune selection

Click a selection tool on the left toolbar , For example, ellipse selection tool ; In the mode of tool options below , Select the merge to current selection option ; To the image window , Press and hold the mouse to draw an ellipse , The ellipse should cover the 5 There is no foreground part selected in the step .

7. increase alpha passageway

Layer menu --> transparent --> add to alpha passageway . The purpose is to determine the final constituency , Delete the part outside the selection to be transparent .

8. Finally pick the image .

Menu selection --> reverse ; Edit menu --> eliminate . Picking image succeeded . File menu --> Export to …, Save as png Format , This format supports transparency .