Photo editing involves altering images using techniques like straightening, cropping, resizing, sharpening, noise reduction, white balancing, adjusting contrast and exposure, changing colors, and removing backgrounds. The document lists and describes 10 common photo editing techniques for adjusting the composition, definition, colors, brightness, and background of digital photographs.

2. Photo editing is the act of altering an image.
Altering - change or cause to change in
character or composition, typically in
a comparatively small but significant way.

3. Photo editing techniques
1. Straighten: adjust the horizon of the photo

4. 2. Crop: trimming out a
portion (usually
peripheral) of the image
to help draw attention
to the subject or
otherwise improve the
composition.

5. 3. Resize: adjust the dimensions of the image.

6. 4. Sharpen: enhance the definition
of the edges in an image (will not
make a blurry image in-focus).
5. Noise reduction: smoothing
the picture out, typically
accomplished by reducing the
pixel size.

7. 6. White balance: the
color of the light in the
image.

8. 7. Contrast: higher contrast makes
an image punchier, while lower
contrast makes it flatter in color.

9. 8. Exposure: the
brightness of the photo.

10. 9. Color adjustments: change
the color of an item or element in
the photo.
10. Background removal: delete the
background from the image, isolating
the subject (this is often used for white
background product photography)