Camera board • Re: Raspberry Pi High Quality Camera DNG Format and Raspberry Pi 4 Model B

This will grab uncompressed RAW files, in RAM, from a HQ camera on a Pi4 and save as TIF, by default in /home/username/Pictures/.

Note the code change if using a Pi5.

You need to install opencv ( sudo apt install python3-opencv)

Code:

#!/usr/bin/env python3import timeimport os, subprocessimport signalimport datetimeimport globimport sysimport cv2import numpy as np#v0.01# setupframerate  = 10    # fpscap_length = 5000  # in mS# setup directory to save to...Home_Files  = []Home_Files.append(os.getlogin())pic_dir = "/home/" + Home_Files[0]+ "/Pictures/"# clear ramprint("Clearing RAM...")frames = glob.glob('/run/shm/*.raw')for tt in range(0,len(frames)):    os.remove(frames[tt])   # start camera with subprocessprint("Starting Camera...")command = "rpicam-raw -n -t 0 --mode 4056:3040:10:U --width 4056 --height 3040 --segment 1 --framerate " + str(framerate) + " -o /run/shm/temp_%06d.raw"s = subprocess.Popen(command, shell=True, preexec_fn=os.setsid)poll = s.poll()while poll != None:    print("waiting...")    poll = s.poll()     # capture for cap_lengthstart = time.monotonic()while time.monotonic() - start < cap_length/1000:    time.sleep(0.1)        # stop camera subprocessos.killpg(s.pid, signal.SIGTERM)       # open frameframes = glob.glob('/run/shm/temp*.raw')fd = open(frames[0], 'rb')f = np.fromfile (fd,dtype=np.uint16,count=-1)im = f.reshape((3040,4064))im = im * 16 # remove this line if using a Pi5fd.close()# save TIFfname = frames[0].split('.')now = datetime.datetime.now()timestamp = now.strftime("%y%m%d%H%M%S")cv2.imwrite(pic_dir + timestamp + ".tif", im)print("Saved: " , pic_dir + timestamp + ".tif")result = cv2.resize(im, dsize=(int(4064/4),int(3040/4)), interpolation=cv2.INTER_CUBIC)cv2.imshow(frames[0],result)# wait for a key pressprint( "Press a key to exit")k = cv2.waitKey(0)cv2.destroyAllWindows()sys.exit()

Should I still keep using the DNG code that takes both the JPG and DNG, and then from there add that DNG to this code? Because I was worried that the DNG that is being produced is incorrect (since it is the black and white boxes). But I will try this code and see if it works!

Statistics: Posted by Ayanhb10 — Sun Apr 07, 2024 5:10 pm

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