Taking images from raspicam at 100 fps

Question

I have been using my raspberry pi and working with the camera module. The lowest time taken by regular raspistill to capture a single image is about 900ms. I use the picamera python interface with video-port set & use camera_sequence function for format = jpeg the time to capture a frame comes down to 80 ms & 30 ms for yuv. Now the project that i am working on requires the time taken to capture a single frame to be at 10ms at least. I know that its possible if we put our raw image data on RAM (possibly the bayers data). Any ideas on how it can be done?

import io
import time
import picamera
import cv2

with picamera.Picamera() as camera:
    camera.resolustion = (750 , 150)
    camera.framerate = 80
    time.sleep(2)
    camera.shutter_speed = 400
    outputs = [io.BytesIO]
    start = time.time()
    camera.capture_sequence(outputs , 'jpeg' , use_video_port=True)
    finish = time.time()
    print(finish-start)

Answer 1

There are two ways to make it really fast.

1 Use Asynchronous programming with AsynchIO to create separate process to shoot another photo while you still save the first one. Would be like

##Move those to some other function, preferably main
time.sleep(2) 
camera.shutter_speed = 400
##

outputs = [io.BytesIO] 
start = time.time() 

#Create i such processes:
def somefunction(semaphore)
    semaphore.Acquire() #Precreated semaphore get's taken by our process or process waits to be released
    camera.capture_sequence(outputs ,'jpeg' , use_video_port=True)
    #finish = time.time() print(finish-start)#Unneeded
    # Enable another process here
    semaphore.Release()
    # Do whatever you like here, time is not of the essence here (but be memory wise! it is limited in raspi!)

Should be pretty quick

2 Recursion could be the other solution

def somefunction(anchor, sequence)
    if sequence <= anchor :
        camera.capture_sequence(outputs ,'jpeg' , use_video_port=True)
        somefunction(anchor, sequence +1)
        #Save, or whatever, your photo here, be cautious about setting too large anchor, it might hang.

link to recursion

[EDIT1] Function should be placed like this:

with picamera.Picamera() as camera:
camera.resolustion = (750 , 150) 
camera.framerate = 80 
time.sleep(2) 
camera.shutter_speed = 400 
outputs = [io.BytesIO]
def function_taking_photo_as_short_as_possible_!_!_!(somearguments* somearguments_count**)
    #body
    pass

if __name__ = "__main__"
    #some simple console app waiting for
    #key to be pressed or whatever
    if keypressed:
        function_taking_photo_as_short_as_possible_!_!_!(none, none)