python - Async / Multi Threading Pillow Image Grab for 60fps -


what i'm trying do.

currently using pil grab screen shot of desktop , display image in constant loop. produces video effect of screenshots. intent analyze each image taken opencv , display manipulated results.

what i'm doing.

at moment have loop 1 millisecond delay taking screenshot , displaying through opencv. unfortunately grabbing , analyzing image takes while , produces effect looking for, @ lowered frame rate takes longer millisecond grab screenshot , display it.

what i'm looking for.

i'm hoping asynchronously run process concurrently can smoother frame rate. unfortunately when attempt use process or threadingon function warning saying action must taken main thread.

how may able make bellow code async/threaded?

def getimage(bbox):     while true:         #grab pil image         pil_image = imagegrab.grab(bbox=(bbox[0], bbox[1], bbox[2], bbox[3])).convert('rgb')          #conver image opencv can use         image = cv2.cvtcolor(numpy.array(pil_image), cv2.color_rgb2bgr)          #show image         cv2.imshow("image", image)          #wait millisecond image displays         cv2.waitkey(1)

error:

*** terminating app due uncaught exception 'nsinternalinconsistencyexception', reason: 'nexteventmatchingmask should called main thread!'


-

Comments

Post a Comment

Popular posts from this blog

java - SSE Emitter : Manage timeouts and complete() -

i writing web app multiple listeners(evcentsource sse clients js) connected server . want store sse emitter per connected listener : can done in memory or other means assigning id each client able achieve far now question ; how send response/event specific client connected web app ? while doing sseemmiters stored either getting completed or timed out. how prevent ? how keep sseemmiter available open infinite time (till client closes) , send events selectively .
Read more

jquery - uncaught exception: DataTables Editor - remote hosting of code not allowed -

i'm trying implement crud operation using datatableseditor using datatables.but i'm getting error messages: 1)uncaught exception: datatables editor - remote hosting of code not allowed. please see http://editor.datatables.net details on how purchase editor license 2)typeerror: a.editor undefined 3) $.fn.datatable.editor not constructor" what reason? here configuration: <%@ page language="java" contenttype="text/html; charset=iso-8859-1" pageencoding="iso-8859-1"%> <!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> <title>insert title here</title> <link rel="stylesheet" type="text/css" href="//cdn.datatables.net/1.10.12/css/jquery.datatables.min.css"> <link re...
Read more

java - How to resolve error - package com.squareup.okhttp3 doesn't exist? -

i trying convert json java object use of gson in maven, following youtube video guidance - https://www.youtube.com/watch?v=vqgghm9pwe0 , theres error occurs when in main class error - package com.squareup.okhttp3 doesn't exist. code below: java package com.codebeasty.json; import com.squareup.okhttp3.okhttpclient; public class main { private static okhttpclient client = new okhttpclient(); public static void main (string [] args) { } } i put in dependency in pom.xml: <dependencies> <dependency> <groupid>com.squareup.okhttp3</groupid> <artifactid>okhttp</artifactid> <version>3.4.2</version> </dependency> <dependency> <groupid>com.google.code.gson</groupid> <artifactid>gson</artifactid> <version>2.8.0</version> </dependency> </dependencies> i dont understand why doesn't recognize com.squareup. there may need download? have downl...
Read more