Basic operation of files , Read create
im = Image.open(“ Memory address ”) # Read images
Sure print（im.size,im.format,im.mode） obtain im Basic information of
about im.size Get two values when you can
eg w,h = im.size
image.new(mode,size,color) # new Create an image ,
image2 = image.crop((x1,y1,x2,y2)) shear image
image3 = image.copy() # Copy image
imgae.show() # display picture
image.save（“ Memory address .jpg”） # Store image
There are many, many classes , You can find something else to see
Add content to the picture , Line , Words etc.
draw = ImageDraw.Draw(im)
You need to put the image （im） Create as draw, You can think of creating an operation object , The operation content is reflected in the image （im） On
Right now draw To operate , Direct manipulation , Do not return objects
draw.line((x1,y1,x2,y2),fill=“red”,width=20) # The starting point （x1,y1） End （x2,y2） Draw a red 20 Wide line
There are also the following figures
draw.rectangle()： Rectangle drawing
draw.arc()：（ Ellipse ） Drawing of arcs
draw.chord()： Drawing of strings
draw.pieslice()： Drawing of pie chart
draw.ellipse()： Drawing of ellipses
draw.polygon()： Draw polygon
The main draw.text((x1,y1),“content”,fill=“red”,font=) stay （x1,y1） The content is countent, Color company , The font font The content of , Among them, the glyphs generally need to be defined by themselves , be used ImageFont modular
font = ImageFont.truetype(‘C:/windows/fonts/Arial.ttf’,size=40) # Like this , Then import the above draw.text() Medium “ font= ” in
Very interesting module , You can do many operations on pictures , Fuzzy , Show the edge of the picture and so on
image = image.filter(ImageFilter.BLUR) # Basic usage BLUR Replaceable
CONTOUR Show the outline （ It is interesting to , You can try ）
DETAIL Detail enhancement
EDGE_ENHANCE Edge enhancement
EDGE_ENHANCE_MORE Enhanced version of the previous
EMBOSS Relief effect
FIND_EDGES Image of edge information
SMOOTH Smooth filtering （ Make the brightness of the image smooth and gradual , Reduce the mutation gradient , Improve image quality ）
Some of them are not written , Many blogs have
2020/10/8
