Can i get Histogram of my picture in my pc?

OpenMV Products
1

i can get Histogram of frame by openmv ide when the code is running or stop .
if i want to get Histogram of a picture in pc,what should i do?

2

Can you provide some context here? In what desktop software? If you just want to capture a screen shot you can screen shot the IDE.

3

i means i want to get hsitogram of pic in my pc by openmvide .by the way ,my openmv ide 3.0.3 can’t run in my win7. openmvide can’t support win7 anylonger?

4

openmvide can’t support win7 anylonger?

Windows 7 is 15 years old now. It’s long out of support now. Qt won’t compile 32-bit code anymore.

i means i want to get hsitogram of pic in my pc by openmvide .

The IDE shows the histogram of the frame buffer while images are streaming. I’m assuming that you want something else given you are asking this question. Can you please explain?

5

in fact, someone check the openmv without ide, so he get the photoes with his mobilephone. he send the photoes to me ,i want to check the histogram by openmvide.
:joy:
the new pc is still not easily to get in a small company in china,most boss dont want to buy a new pc for staff。

6

You can load an image to the frame buffer using the OpenMV cam and then you’ll see the histogram in the IDE.

image.Image("path/to/file.jpg", copy_to_fb=True)

And replace the sensor.snapshot() call with that.

2 Likes
7

roger that ，thank you

8 
[quote="kwagyeman, post:6, topic:10410"]
`image.Image`
[/quote]

# Untitled - By: Administrator - Thu Jan 2 2025

import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)

clock = time.clock()

while(True):
    clock.tick()
    #image.Image("./BAD2.jpg", copy_to_fb=True)# it is ok
        
    image1=image.Image("./BAD2.jpg", copy_to_fb=False)
    myhisttogram=image1.get_histogram()
    print(clock.fps())

Traceback (most recent call last):
File “”, line 18, in
ValueError: Expected a mutable image
when I want to get histogram of jpg saved in openmv, openm ide says error

9 
myhisttogram=image1.to_rgb565().get_histogram()

Also, you don’t need to get_histogram on the camera since the IDE generates that for any image it pulls from the camera.