Automatic cropping of excess background in a photo?

Question

Image processing

Hello!
Please tell me, there are about 2000 similar photos of furniture:

The problem is that all objects are of different sizes, but you need to bring them to a common view.
All photos are on a white background. The gray frame is the size of the photo, the red one is how you need to crop it. Those. the object must be inscribed in a rectangle and sprinkle the excess.
Can this be done automatically? It is also desirable to add 100px of white background after the crop.
Thank you!

Answer 1

Here is a python script (2.7, PIL):

from PIL import Image
import math
import sys

way = '1.png'
print sys.argv[1]
way = sys.argv[1]
image = Image.open(way)
width = image.size[0]
height = image.size[1]

alpha = image.getpixel((2,2))



left = width
right = 0
top = height
bottom = 0
print str(alpha)
for x in range(width):
    for y in range(height):
        rng = math.sqrt(math.pow(image.getpixel((x,y))[0]-alpha[0],2)+math.pow(image.getpixel((x,y))[1]-alpha[1],2)+math.pow(image.getpixel((x,y))[2]-alpha[2],2))
        #print str(rng)
        if rng > 89:
            
            
            if x<left:
                left = x
            if x>right:
                right = x
            if y<top:
                top = y
            if y>bottom:
                bottom = y
print str(left)+ ','+str(top)+'   '+str(right)+','+str(bottom)                

width = right-left
height = bottom-top
img = Image.new("RGBA", (width,height), (0,0,0,0))
for x in range(width):
    for y in range(height):
        img.putpixel((x,y),image.getpixel((x+left,y+top)))


img.save("test1.png", "PNG")

print "Done!"

As a parameter, it receives the name of the file, crops it, and creates a file crop_name.extension .
The result of the work:
This:

Turns into this:

Feed this script to a bat file, which for all files in the folder will apply it and you will be happy.

Answer 2

In Photoshop:
Open one picture that needs to be cropped, go to the menu Window -> Actions, Create a new Action (Create New Action), recording of actions will automatically start. Go to Image -> Trim, check Top Left Pixel Color, press ok. Stop recording Action (stop button). It should look like the picture:

Next, go to File -> Automate -> Batch,
In the Action field - specify the Action you just created
In the Source field - specify Folder, press the Choose button, select your folder with pictures.
In the Destination field - specify Save and Close
and click OK.

Answer 3

You can record an action in Photoshop, something like: Magic Wand (in the corner) -> Cut -> Select All -> Copy -> New File -> Paste -> Save. And run through the Image Processor.

Answer 4

crop
www.imagemagick.org/script/command-line-options.php#trim
frame
www.imagemagick.org/script/command-line-options.php#border

Answer 5

gimp + bimp . Use the auto framing procedure.