LMDB creating script about textboxes

[zjuDebug]

@Godricly I do this two step

1. convert the SynthText to xml format
2. use the examples in https://github.com/weiliu89/caffe/tree/ssd to create LMDB file

[Godricly]

Thank you for the help. I got it done.

[pranayamhatre175]

Hi...I am new in caffe and i just know basic working of caffe. For single character recognition we just provide image path and label in train.txt and val.txt file. Can anyone please tell me in Textboxes what is format of train.txt and val.txt for creating lmdb?

My train.txt file contains image path and annotation file path for coco dataset is it right ? and how can we open lmdb file which contains annotations ?

Thank you.

[pranayamhatre175]

I used following code for reading LMDB file

import caffe
import lmdb
import numpy as np
import cv2
import matplotlib.pyplot as plt
from caffe.proto import caffe_pb2

lmdb_file='/home/arha/workarea/ocr_project/cocotext/data/lmdb/coco_val_lmdb'
lmdb_env = lmdb.open(lmdb_file)
lmdb_txn = lmdb_env.begin()
lmdb_cursor = lmdb_txn.cursor()

datum = caffe_pb2.Datum()
for key, value in lmdb_cursor:
datum.ParseFromString(value)

label = datum.label
print 'label=',label
data = caffe.io.datum_to_array(datum)
print data.shape
print 'data=',data
image = np.transpose(data, (1,2,0))
cv2.imshow('cv2', image)
cv2.waitKey(0)
print('{},{}'.format(key, label))

And It is giving output as follow

label= 0
(0, 0, 0)
data= []
OpenCV Error: Assertion failed (size.width>0 && size.height>0) in imshow, file /home/arha/softwares/opencv-2.4.13/modules/highgui/src/window.cpp, line 261
Traceback (most recent call last):
File "lm.py", line 28, in
cv2.imshow('cv2', image)
cv2.error: /home/arha/softwares/opencv-2.4.13/modules/highgui/src/window.cpp:261: error: (-215) size.width>0 && size.height>0 in function imshow

Please clear my doubts.

Thank you

[pankajkumar]

@Godricly Can you share the code for converting SynthText to xml format?

[Godricly]

You can do it following PASCAL format.

[ahmedmazari-dhatim]

Hello @Godricly & @zjuDebug ,
l have my own dataset. To create the LMBD file l need to
use the [](examples in https://github.com/weiliu89/caffe/tree/ssd) only or l have to convert my dataset into xml format ?

If yes, how can l convert mydataset to xml formalt ?

Thank you a lot

[Godricly]

The xml first. 2017-07-11 0:02 GMT+08:00 ahmedmazari-dhatim <[email protected]>:

…

Hello @Godricly <https://github.com/godricly> & @zjuDebug <https://github.com/zjudebug> , l have my own dataset. To create the LMBD file l need to use the [](examples in https://github.com/weiliu89/caffe/tree/ssd) only or l have to convert my dataset into xml format ? If yes, how can l convert mydataset to xml formalt ? Thank you a lot — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#10 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AQwQvwsMe7VCpzaXzTCV4cnIyv6W3JOVks5sMksigaJpZM4MSCeJ> .

[ahmedmazari-dhatim]

@Godricly ,

Thank you for your answer. How can convert my dataset to xml format so ?

Thank you

[Godricly]

well. it depends on your dataset. That's not what I can help. The xml format follows PASCAL format. You can refer to that one. Best Yan 2017-07-12 0:21 GMT+08:00 ahmedmazari-dhatim <[email protected]>:

…

@Godricly <https://github.com/godricly> , Thank you for your answer. How can convert my dataset to xml format so ? Thank you — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#10 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AQwQv-z3Gx3nDZtA5k9CfSuFM0Nkn1-sks5sM6EdgaJpZM4MSCeJ> .