Python OpenCV divide image(shelf) into parts(shelves) -


my task find proper solution dividing image shelf horizontal parts (shelves). shelves different in color, size , can , can not contain objects on them.

for example these 2 shelves on images below have different spaces between each other , colors:

enter image description here enter image description here

is there solution perform task different occasions? thinking applying sobel y gradient hough line transform, efficient different cases?

note, number of rows in shelf known before image processing, maybe helpful.

thanks information in advance!

answer:

for has similar task me sharing solution used.

first time thinking using lines rows division, not universal solution me. satisfactory result have recieved cv2.reduce. thereby can find horizontal or vertical graphs our image (in case horizontal graph).

after graph ready can write algorithm detect regions divided.

below code fragment apply reduce on image , visualise graph:

import cv2 matplotlib import pyplot plt   image = cv2.imread('test6.jpg') gray = cv2.cvtcolor(image, cv2.color_bgr2gray) ret,th = cv2.threshold(gray,0,255,cv2.thresh_binary+cv2.thresh_otsu) reduced_h = cv2.reduce(th, 1, cv2.reduce_avg)  index, line in enumerate(reduced_h):     cv2.line(image, (0, index), (line[0], index), (0, 255, 0), 1)  plt.imshow(cv2.cvtcolor(image, cv2.color_bgr2rgb)),plt.show()

which gives: enter image description here

i able reach next result modified algorithm: enter image description here

you can discover code at repo.


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more