In previous article, I’ve shown you how to capture Pi camera images, and let’s try to capture in different formats.
The camera.capture() method is used for capturing images with,
- the first parameter: to specify the file name to saved.
- the second parameter: to specify the file format to be used. The default format value is None, and picamera will try to guess the format based on file name, if it fails, then it will raise an Error.
The following script will try to capture camera images in common formats.
# app.py
import picamera
formats = [ 'jpeg', 'png', 'gif', 'bmp' ]
camera = picamera.PiCamera()
camera.start_preview()
for f in formats:
print('Capturing format: ' + f)
camera.capture('snapshot.' + f, format = f)
camera.stop_preview()
According to the documentation, the following formats are supported:
‘jpeg‘ – Write a JPEG file
‘png‘ – Write a PNG file
‘gif‘ – Write a GIF file
‘bmp‘ – Write a Windows bitmap file
‘yuv‘ – Write the raw image data to a file in YUV420 format
‘rgb‘ – Write the raw image data to a file in 24-bit RGB format
‘rgba‘ – Write the raw image data to a file in 32-bit RGBA format
‘bgr‘ – Write the raw image data to a file in 24-bit BGR format
‘bgra‘ – Write the raw image data to a file in 32-bit BGRA format
‘raw‘ – Deprecated option for raw captures; the format is taken from the deprecated raw_format attribute
Have fun toying with camera 🙂
