Search found 158 matches

by chrisPyres66
Fri Aug 02, 2019 6:07 am
Forum: General Topics
Topic: Size of usb key mounted as openmv
Replies: 9
Views: 4352

Re: Size of usb key mounted as openmv

Yes i know, but the time to transfert image through UART is too long, and my idea was to stock these images temporarely to this flash. I thought the vfs driver manage this page writing but you are right, there are some unstabilities. eg, sometimes all files i had on this flash disappeared, probably ...
by chrisPyres66
Thu Aug 01, 2019 5:46 am
Forum: General Topics
Topic: What is the simplest way to create my own python function ?
Replies: 7
Views: 4060

Re: What is the simplest way to create my own python function ?

Sorry i was not very explicit, because i proposed a solution and dit not with the idea. The idea is to have a template python function included in the github for newbie to understand how it works and test it. I think to do it by myseld, i should - create and add in py directory the files : py_file.c...
by chrisPyres66
Thu Aug 01, 2019 5:21 am
Forum: General Topics
Topic: Size of usb key mounted as openmv
Replies: 9
Views: 4352

Re: Size of usb key mounted as openmv

Well i dont understand what means "filesystem is cached in memory" because : F7 has : - sector (0) for boot of 32k - sector (1, 2, 3) for Fat of 32k each (32k x 3 = 96k) - sector 4 of 128k and sector (5 to 11) of 256k each for firmware each (128k + 7 x 256k = 1920K) H7 has : - sector (0) for boot of...
by chrisPyres66
Thu Jul 25, 2019 2:43 am
Forum: General Topics
Topic: What is the simplest way to create my own python function ?
Replies: 7
Views: 4060

Re: What is the simplest way to create my own python function ?

Is it possible to have a template lib for newbie like there are in imlib_config.h ?
by chrisPyres66
Thu Jul 18, 2019 2:52 am
Forum: General Topics
Topic: OpenMV and robotic arms
Replies: 3
Views: 2169

Re: OpenMV and robotic arms

It is not a function, it is the lens wich is fixed focus or auto focus !
If you use default lens of openmv, it is all fixed focus
by chrisPyres66
Wed Jul 17, 2019 5:06 am
Forum: General Topics
Topic: What is the simplest way to create my own python function ?
Replies: 7
Views: 4060

Re: What is the simplest way to create my own python function ?

Well thanks, but i dont know if i am sure to do a good and generic code well integrated enough to github it...
I tried to do a manual exposition and gain control (MEC and MGC) in function of a ROI luminance in a gray image.
by chrisPyres66
Wed Jul 17, 2019 4:51 am
Forum: General Topics
Topic: OpenMV and robotic arms
Replies: 3
Views: 2169

Re: OpenMV and robotic arms

What i know, you have algorythms to detect circle and rectangle which are the top and the side of a cylinder lol For image recognition, the pre-requesite is to have a sharpen image, and you can have this with - a fixed focus - global shutter - quick exposition - and sharpen algorythm Avoiding to to ...
by chrisPyres66
Tue Jul 16, 2019 11:44 am
Forum: General Topics
Topic: What is the simplest way to create my own python function ?
Replies: 7
Views: 4060

What is the simplest way to create my own python function ?

Dear all, I have some problem of memory size with F7 cam if my python code is too big, not yet with H7, lol To improve this, and my knowledge, i would like to do and integrate my own python function with openmv github source. I have so two questions : - What is the simplest way to create my own pyth...
by chrisPyres66
Fri Jul 12, 2019 6:06 am
Forum: General Topics
Topic: Size of usb key mounted as openmv
Replies: 9
Views: 4352

Size of usb key mounted as openmv

Dear all, When i connect a cam (H7/F7), there is a usb key mounted of 80Ko for F7 and 110Ko for H7 (without an SDCARD of course). I would like to know if it is possible to increase this size of this usb key because the overall size of flash is 2Mo (F7/H7) and the full firmware + bootloader is around...
by chrisPyres66
Fri Jul 05, 2019 5:45 am
Forum: Technical Discussion
Topic: upper quartile
Replies: 4
Views: 6728

Re: upper quartile

Up for memory :)
by chrisPyres66
Thu Jul 04, 2019 8:44 am
Forum: General Topics
Topic: H7 compilation
Replies: 15
Views: 5893

Re: H7 compilation

I installed this : https://github.com/ntfreak/openocd
and
- it works for debugging bootloader (i did an frimware programmation with openmv IDE)
- but i have reset for firmware at led_init( hardfault ), and mp_init during mp_lookuptable(...) if i comment led...
by chrisPyres66
Thu Jul 04, 2019 2:50 am
Forum: General Topics
Topic: H7 compilation
Replies: 15
Views: 5893

Re: H7 compilation

Thanks, I will try this. What is your toolchain to debug H7 or F7 cam ? I would prefer to use the st toolchain, via stm32cubeMxProgrammer configurator and the Atollic True Studio IDE specially now where there is an AI cube package for cnn dedicated for CMSIS-NN. Unfortunately, i dont know how to joi...
by chrisPyres66
Wed Jul 03, 2019 11:55 am
Forum: General Topics
Topic: H7 compilation
Replies: 15
Views: 5893

H7 compilation

Dear All, I try to do my own compilation with H7 cam, and it works, ouhou ! I did it with a virtuallbox i had with ubuntu and qtcreator than i use for F7 cam. For debugging with openocd (0.10.0), gdb-server and baremetal, i downloaded a stm32h7x.cfg here : https://github.com/ntfreak/openocd/blob/mas...
by chrisPyres66
Wed Jul 03, 2019 6:23 am
Forum: General Topics
Topic: cpufreq Pb with OpenMv H7 (V3.4.2)
Replies: 3
Views: 2635

cpufreq Pb with OpenMv H7 (V3.4.2)

Dear All, I dont manage to get worked the cpufreq, here is the code : import sensor, image, time, cpufreq print(cpufreq.get_supported_frequencies()) cpufreq.set_frequency(200) #100 and 200 does not work print( cpufreq.get_current_frequencies() ) sensor.reset() sensor.set_pixformat(sensor.RGB565) sen...
by chrisPyres66
Mon Jul 01, 2019 3:57 am
Forum: Technical Discussion
Topic: Questions on modularity
Replies: 7
Views: 6648

Re: Questions on modularity

Do you think is it possible to do a external ram shield ?
by chrisPyres66
Wed Jun 26, 2019 10:27 am
Forum: Technical Discussion
Topic: Questions on modularity
Replies: 7
Views: 6648

Re: Questions on modularity

Have you have already think about how to add SDRAM for increasing heap, and size of main.py or cnn ?
by chrisPyres66
Wed Jun 26, 2019 4:22 am
Forum: Technical Discussion
Topic: Size of compressed image
Replies: 1
Views: 2740

Size of compressed image

Dear All, I want to take compressed snapshot (VGA/RGB565) with M7 every 3s to send it on UART at 115200bauds. To be sure to have best quality / size ratio, i triy to detect the best Q factor / file size ratio. Here is a code : import sensor, image, pyb, time, gc red_led=pyb.LED(1) red_led.off() sens...
by chrisPyres66
Thu Jun 13, 2019 10:42 am
Forum: Technical Discussion
Topic: upper quartile
Replies: 4
Views: 6728

upper quartile

Dear all, I try to analyse area of image, and i get different values of upper quartile for the same area. Here is the test code : import sensor, image, time sensor.reset() sensor.set_pixformat(sensor.GRAYSCALE) sensor.set_framesize(sensor.QVGA) sensor.skip_frames(time=1000) while(True): img = sensor...
by chrisPyres66
Thu Jun 06, 2019 12:12 pm
Forum: Technical Discussion
Topic: image areas analyse
Replies: 2
Views: 4063

image areas analyse

Dear all, I try to analysesome areas of the image but i am not sure if i do it well because my results are not what i expected. For exemple, i created a bmp image, as i did it for masking, with the background at value 0x00 and an area in the middle with 0xFF value. I tried to do an AND boolean opera...
by chrisPyres66
Thu Jun 06, 2019 11:45 am
Forum: Technical Discussion
Topic: Precision of RGB Gain
Replies: 4
Views: 5326

Re: Precision of RGB Gain

Thanks, I tried to modify the gain register at address 0x00 and read the db gain with sensor.get_gain_db(). Here is the code, and it is not linear between register and the db gain. import sensor, image, time sensor.reset() sensor.set_pixformat(sensor.GRAYSCALE) sensor.set_framesize(sensor.VGA) senso...
by chrisPyres66
Tue Jun 04, 2019 10:53 am
Forum: Technical Discussion
Topic: set gain ceiling
Replies: 4
Views: 6160

Re: set gain ceiling

well, i see
- set_gainceiling : 2, 4, 8, 16 or 32 for x2, x4, x8, x16 or x32
- set_auto_gain : 2 to 32db

But i dont still understand teh relationship between gain and register ?
Thanks,
by chrisPyres66
Tue Jun 04, 2019 9:18 am
Forum: Technical Discussion
Topic: Precision of RGB Gain
Replies: 4
Views: 5326

Precision of RGB Gain

Dear all, I try to understand how works the gain in OV7725 camera and i am lost without speaking about analog gain. Firstly, there is the main gain at register address 0x00 which can be used with these both python functions where the gain is in db : - sensor.set_auto_gain( False, gain_db=(1 to 32db)...
by chrisPyres66
Tue Jun 04, 2019 8:08 am
Forum: Technical Discussion
Topic: set gain ceiling
Replies: 4
Views: 6160

set gain ceiling

Dear all, I try to understand how works the gain in the OV7725 camera, and i stopped on the gain ceiling. To set the gain ceiling there is 2 ways in python : - sensor.set_gainceiling(4) - sensor.set_auto_gain(True, gain_db_ceiling=4) which both write at the COM9 register but the c language codes do ...
by chrisPyres66
Tue Jun 04, 2019 2:42 am
Forum: General Topics
Topic: Do i have to skipframe if i change format or frame size without ressetting ?
Replies: 3
Views: 5703

Re: Do i have to skipframe if i change format or frame size without ressetting ?

Thanks, i effectively met this case.

How can i be sure of the lmean level before taking the first snapshot in RGB565 and VGA configuration ?
by chrisPyres66
Mon Jun 03, 2019 5:48 am
Forum: General Topics
Topic: Do i have to skipframe if i change format or frame size without ressetting ?
Replies: 3
Views: 5703

Do i have to skipframe if i change format or frame size without ressetting ?

Dear all, I have different light conditions and i want to test the lmean before taking the first snapshot. Unfortunately, i cant do sensor.snapshot().histogram().get_statistics() in RGB565 and VGA configuration. Therefore i do it in smaller configuration i change after like this : import sensor, ima...
by chrisPyres66
Mon May 13, 2019 5:04 am
Forum: Technical Discussion
Topic: LBP
Replies: 10
Views: 6924

Re: LBP

well, the uniform matrix is to reduce the number of lbp (256 possibility) to 59 most common.
So it is not usefull to change for specific use.
Thanks,
by chrisPyres66
Fri May 10, 2019 6:16 am
Forum: Technical Discussion
Topic: LBP
Replies: 10
Views: 6924

Re: LBP

Well i understand than lbp_weights has a high value around eyes, medium value for mouth and ear, then low level for cheeks.
If i want to have a neutral use, i can set 1 for all the 7x7 matrix.

I dont understand what is for the uniform_tbl matrix ?
by chrisPyres66
Thu May 09, 2019 10:44 am
Forum: Technical Discussion
Topic: LBP
Replies: 10
Views: 6924

Re: LBP

Thanks,
I red lbp.c and i discovered the weight are optimized for face recognition.
I would like to use for another use, what is the default values, and how can i define it to my own case ?
by chrisPyres66
Thu May 09, 2019 9:01 am
Forum: Technical Discussion
Topic: LBP
Replies: 10
Views: 6924

Re: LBP

Wowwwww, i tested a 6x6 lbp on M7, and it works fine.
Which file from github i have to update to get this ?
Thanks,
by chrisPyres66
Tue May 07, 2019 8:27 am
Forum: Technical Discussion
Topic: LBP
Replies: 10
Views: 6924

Re: LBP

Below is the simplified code, where you can define the number of line and column which define the number of areas where the lbp is defined and checked. I tested the M7 and H7 camera, and both get problem if i increase the number of line and column. With openmv 2.2.0 : For M7 (rev 3.4.1), in VGA : - ...
by chrisPyres66
Mon May 06, 2019 10:49 am
Forum: Technical Discussion
Topic: LBP
Replies: 10
Views: 6924

LBP

Dear All, I use lbp descriptor to recognize a pattern and, to filter local noise, i divide the image in several part with each a lbp descriptor. My problem is if i use more than 4 lbp pattern, whatever the resolution, i have frequently deconnexion and it does not seem stable. Do you have any knowled...
by chrisPyres66
Thu Apr 04, 2019 6:11 am
Forum: General Topics
Topic: Nvidia digits to train cnn with caffe
Replies: 3
Views: 9550

Re: Nvidia digits to train cnn with caffe

Nice, do you have some advice because i dont manage to quantize to openmv camera with : python2 ~/openmv/ml/cmsisnn/nn_quantizer.py --gpu --model ./quantizer.prototxt --weights ./snapshot_iter_240.caffemodel --save ./V22_Lenet.pkl I used a lenet network with my own image set. As nvidia digits is use...
by chrisPyres66
Wed Apr 03, 2019 4:47 am
Forum: General Topics
Topic: Nvidia digits to train cnn with caffe
Replies: 3
Views: 9550

Nvidia digits to train cnn with caffe

Dear all,

Do you know if it is possible to use Nvidia digits software to train CNN and then convert it to openmv ?

Thanks,
by chrisPyres66
Mon Mar 18, 2019 10:04 am
Forum: General Topics
Topic: M7 camera memory solutions
Replies: 1
Views: 3654

M7 camera memory solutions

Dear all, As everybody waiting the new H7 camera, I have M7 camera memory problem with cnn and heap size or heap variable allocation along time. If I would like to improve this, i am not sure to well understand how it works. Flash is divided like this - Bootloader : 32 Ko - Embedded Flash Drive : 96...
by chrisPyres66
Mon Mar 11, 2019 4:47 am
Forum: General Topics
Topic: white and cold image colors for M7 (OV7725) => blur image
Replies: 6
Views: 4997

Re: white and cold image colors for M7 (OV7725) => blur image

Ok i tested this and it seems ok sensor.__write_reg(0x24, 0x40) # New: 0x40 \ default: 0x75 / OPENMV: 0x58 sensor.__write_reg(0x25, 0x30) # New: 0x30 \ default: 0x63 / OPENMV: 0x48 sensor.__write_reg(0x26, 0xa1) # New: 0xa1 \ default: 0xD4 / OPENMV: 0xC3 sensor.__write_reg(0x0d, 0x71) # New: 0x71 \ ...
by chrisPyres66
Fri Mar 08, 2019 6:01 am
Forum: General Topics
Topic: white and cold image colors for M7 (OV7725) => blur image
Replies: 6
Views: 4997

Re: white and cold image colors for M7 (OV7725) => blur image

Dear, In place of turning auto gain and auto white balance off after 200ms, i changed the camera registers AEW and AEB in helloworld.py like this : import sensor, image, time sensor.reset() sensor.set_pixformat(sensor.RGB565) sensor.set_framesize(sensor.VGA) sensor.__write_reg(0x24, 0x40) #New: 0x40...
by chrisPyres66
Wed Feb 27, 2019 6:23 am
Forum: General Topics
Topic: white and cold image colors for M7 (OV7725) => blur image
Replies: 6
Views: 4997

white and cold image colors for M7 (OV7725) => blur image

Dear all, I have got another camera with OV7725 and the image colors are more hot and more red compare to the M7 which the colors are more white and cold. This whiteness seems to blur the images like big aperture reduce depth of field. This other camera uses the OV529 ftom omnivision too, i dont kno...
by chrisPyres66
Thu Feb 14, 2019 4:47 am
Forum: General Topics
Topic: exposure and gain control
Replies: 11
Views: 6323

Re: exposure and gain control

lol, ok you mean the last current firmware.

I am not sure which function does this gamma correction.
Is it the function for histogram ?

Thanks,
by chrisPyres66
Wed Feb 13, 2019 7:57 am
Forum: General Topics
Topic: exposure and gain control
Replies: 11
Views: 6323

Re: exposure and gain control

Hi, the camera doesn't support gain/exposure for a small part of the image. As for the min and maxes, the gain has a max of 32 or so. The exposure isn't really limited by anything. But, if you set it very high the FPS will go to near 0. The exposure is based on the pixel readout line times which we...
by chrisPyres66
Tue Feb 12, 2019 11:39 am
Forum: General Topics
Topic: exposure and gain control
Replies: 11
Views: 6323

exposure and gain control

Dear all, As i use a small part of the image, i try to control the exposure and gain to have the highest contrast with different ambiant lights. Is there a possibility to have the automatic gain and exposure control on a small part of the image ? sensor.set_windowing((128,128)) only cut the image (w...
by chrisPyres66
Mon Jan 28, 2019 10:56 am
Forum: General Topics
Topic: Draw Net, learning curve and intermediate images of CNN training
Replies: 4
Views: 3732

Re: Draw Net, learning curve and intermediate images of CNN training

To complete this post, i just discoverted than caffe have curve plotting python program. Here is the way i use it : 1- Create log file cd ~/openmv/ml/cmsisnn/ ./models/lettre_O_V3/fnt-train.sh >> ./models/lettre_O_V3/fnt-lettre_O_V3-output.log 2>&1 2- Draw plot Supported chart types: 0: Test_accurac...
by chrisPyres66
Mon Jan 28, 2019 2:42 am
Forum: General Topics
Topic: Draw Net, learning curve and intermediate images of CNN training
Replies: 4
Views: 3732

Re: Draw Net, learning curve and intermediate images of CNN training

yes you are right i jump to caffe forum
thanks,
by chrisPyres66
Fri Jan 25, 2019 5:48 am
Forum: General Topics
Topic: Draw Net, learning curve and intermediate images of CNN training
Replies: 4
Views: 3732

Draw Net, learning curve and intermediate images of CNN training

Dear all, I try and understand how CNN training works by having the net image, learning curve and intermediate images of CNN training. For draw the net i use ~/caffe/python/draw_net.py ~/openmv/ml/cmsisnn/models/lettre_O_V3/fnt-lettre_O_V3_train_test.prototxt ~/openmv/ml/cmsisnn/models/fnt-lettre_O_...
by chrisPyres66
Fri Jan 25, 2019 2:56 am
Forum: General Topics
Topic: advices to train cnn
Replies: 7
Views: 5062

Re: advices to train cnn

Yes i scored 100% after train, test and quantize.
net.forward works well with an image with same size, ratio object/image size and binary characters.
I dont know how to get working the network with net.search at the moment...
Thanks,
by chrisPyres66
Thu Jan 24, 2019 11:04 am
Forum: General Topics
Topic: advices to train cnn
Replies: 7
Views: 5062

Re: advices to train cnn

Yes you are right, the explanations are very good and clear. To reduce the size of the network file, a simple way is to reduce the num_output in convolution layers of the train_test.prototxt architecture file. As you said, the cnn learn only as much as the datas have. My feeling is if you have a lot...
by chrisPyres66
Thu Jan 24, 2019 3:03 am
Forum: Technical Discussion
Topic: Quantize network stops at "Network initialization done." step
Replies: 1
Views: 1186

Quantize network stops at "Network initialization done." step

Hello, I trained and i try to quantize the network but it stops at "Network initialization done." step. The commands is : python2 nn_quantizer.py --gpu --model models/lettre_O_V1/lettre_O_train_test.prototxt --weights models/lettre_O_V1/lettre_O_iter_1300.caffemodel --save models/lettre_O_V1/lettre_...
by chrisPyres66
Tue Jan 22, 2019 8:42 am
Forum: General Topics
Topic: advices to train cnn
Replies: 7
Views: 5062

Re: advices to train cnn

well thanks, As you said, i suppressed directory but i still have a file.network around 90K what ever the number of letter and it is too big for the M7 ??? I try to train with different other parameters of solver.prototext to minimize the size without success at the moment. Any help would be appreci...
by chrisPyres66
Mon Jan 21, 2019 11:47 am
Forum: General Topics
Topic: advices to train cnn
Replies: 7
Views: 5062

advices to train cnn

Hello all, I try to train a cnn with caffe to detect the letter "OK" or not. My first CNN is not very good and i would like to have your advices. I got fonts in png (white font on black background with 28x28px) for the letter O and K (real size is more around 120x120px, and the letter are more black...
by chrisPyres66
Fri Jan 18, 2019 5:18 am
Forum: General Topics
Topic: Pb to quantize the network
Replies: 4
Views: 5369

Re: Pb to quantize the network

Dear, I followed your log but my caffe was not in the same directory. Then i change path in train.sh and test.sh to get them working. My problem was simply because : - i did not compile caffe until the end (test, runtest and distribute) - i did not export pythonpath in the bashrc - i tried to use py...

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