Commit Graph

228 Commits

Author SHA1 Message Date
Kwabena W. Agyeman
45b319dc84 Add the ability to pull higher scaled text kerning in... 2018-03-16 01:27:51 -04:00
Kwabena W. Agyeman
fc74e70c32 Upgrade Drawing Features
Heavily upgraded the drawing features onboard the OpenMV Cam. We now
have all the basic drawing methods folks expect along with all the
parameters you need. Finally! You can make big text fonts.

* Added line thickness support
* Added shape fills
* Added text scaling
* Added draw arrow.
2018-03-12 01:14:03 -04:00
iabdalkader
2feed8b291 Add CNN example script. 2018-03-05 03:25:23 +02:00
Kwabena W. Agyeman
397abe4746 Cleanup Math Operations
Add binary image support to the math operations and updated them to
support masks. Replace now also support mirroring operations. Finally,
adding missing basic math ops like add/sub/mul/div. The operations are
designed to work as image blending operations so they take care of
scaling their output accordingly.
2018-02-25 22:03:31 -05:00
Kwabena W. Agyeman
fb3d0776f0 Overhaul Binary Functions
Binary() can noew zero things so you can remove bright lights. All the
line ops (and/or/xor/etc) accept masks. Erode and dilate now accept
masks. And finally, you can now pass arguments versus keywords for folks
who don't read the documentation. Also, the binary image type is now
supported for these methods.

I'm putting in all this work because I saw the need for it when I was
doing shadow removal.

Note: Some effort needs to be put into optimizing the py_image.c code
soon. This is on the todo list before the next release.
2018-02-25 00:15:02 -05:00
Konrad Becker
4f606a15c0
type correction 2018-01-25 13:15:40 +01:00
Kwabena W. Agyeman
fc9c416a21 Frame Differencing with Shadow Removal
Add in support for shadow removal from the current image using a shadow
free background image. Test results show the algorithm works similar to
max() while still keeping dark objects around. The preformance impact of
the algorithm is not too high. An in memory example can achieve 30 FPS.
2018-01-21 16:41:04 -05:00
Kwabena W. Agyeman
c78f91b421 Phase Corr Redo 2
Redid the phase correlation code again so it's one method call now. This
method call can either do logpolar phase correlation to get rotation/
scale or translation(x/y). Additionally, it will be able to also do both
at once. However, I don't have that quite working yet.

I've updated the example scripts to reflect the new code too.

Finally, I had to fix a bug in the rotation correction code.

...

Once I've got the full pipeline working I will post scripts for that. I
have all the code in there and it's been somewhat debugged... However, I
can't get a useful phase correlation lock out of the log polar fft mag.
I plan to look into noise filtering and spectral whitening solutions for
this.
2018-01-15 23:29:04 -05:00
iabdalkader
5c50d9948c Update find numbers script. 2018-01-12 01:30:36 +02:00
iabdalkader
fd989c76dc Update find numbers script. 2018-01-12 01:29:27 +02:00
iabdalkader
b2d584fe95 Add MQTT library and example. 2018-01-09 20:15:13 +02:00
Kwabena W. Agyeman
7516d7699f Add Advanced Optical Flow scripts
Someone asked me about doing a field of receptors before. These scripts
show how to do that. Also, added example scripts for calling the linear
polar and log polar methods added previously which power
find_rotscale().
2018-01-08 00:10:55 -05:00
Kwabena W. Agyeman
213396d090 Complete Overhaul of phasecorrelation
Just doing one big commit/PR here since I noticed that breaking it up
causes issues.

Anyway, these fixes give us GOOD/WORKING/FAST optical flow now on the
OpenMV Cam M7. A number of changes were made to the optical flow
scripts. You have have absolute and differential estimation example
scripts. Additionally, you also have the ability to measure rotation and
scale changes too. Linear/Log Polar conversion was added for this. Users
may use the new code for generic image manipulation too. Finally, I
updated the power of 2 resolutions since you actually HAVE to use them
with optical flow for the phasecorrelation code to work correctly.

I have some more advanced scripts coming after this. But, This commit is
already getting kinda large so I'm stopping it here.
2018-01-07 17:48:07 -05:00
Kwabena W. Agyeman
30ecbdc4f8 Add white balance control.
You can now get white balance gains from the camera chip and set the
camera to then use these gains again in a new enviorment.
2017-12-31 19:56:02 -05:00
Kwabena W. Agyeman
1cf5211efb Fix bugs with sensor auto gain control. 2017-12-31 17:28:27 -05:00
Kwabena W. Agyeman
139cdbdbc9 Add auto gain control ceiling value to be settable by the auto gain
method.

Things are in dB now too. Need to remove the previous settable method.
2017-12-30 23:54:19 -05:00
Kwabena W. Agyeman
aeb0238040 Added hmirror and vflip support to the MT9V034 and example scripts (#294)
* Added hmirror and vflip support to the MT9V034 and example scripts.

* Moved sensor example scripts to one place.

* Add delay to these script for register settling time.
2017-12-31 00:32:01 +02:00
Kwabena W. Agyeman
b906c5f192 Add auto gain control setting support (#293)
You can now get the auto gain setting in dBs and set the value in dBs.
Example scripts are included. Code was tested on the OV7725.
2017-12-30 23:18:35 +02:00
Kwabena W. Agyeman
7be0a7a182 Add exposure control for all sensors (#292)
* Textual register cleanup.

No functional changes.

* Add exposure control support.

You can now set the exposure for the camera in microseconds (versus an
opaque unknown value previously). First, we have a new method called
get_exposure_us() which will get the expsoure time in microseconds. This
let's you determine what the auto exposure algorithm set the exposure
time to. Second, the previously implmented set_auto_exposure() method
which allows you to turn aec off and on accepts a exposure_us keyword
argument when you turn aec off to manually control the exposure.

The next commit will add support for other sensor types.

* Cleanup register formatting.

No functional changes.

* Add exposure control support for the OV2640.

Register access for this chip is a PITA.

* Formatting Cleanup.

No functional changes.

* Add exposure control for ov9650.

Just doing it for all sensors.

* Add missing 2 factor.

* Added exposure control for the MT9V034.

* Add exposure control example.

Works well on the OV7725.
2017-12-30 15:56:11 +02:00
Kwabena W. Agyeman
cbbead0785 Add adaptive thresholding to filters.
I still need to go back and optimizing and cleanup the code. I just
wanted to get the feature in first.
2017-12-27 19:23:48 -05:00
Ibrahim Abd Elkader
57b8ba2cda
Merge pull request #290 from kwagyeman/frame_difference_scripts
Add frame differencing example scripts.
2017-12-28 00:29:51 +02:00
Kwabena W. Agyeman
a6b659131d Add frame differencing example scripts.
Better ones that can work in memory now.
2017-12-27 14:43:36 -05:00
Ibrahim Abd Elkader
7346efbf0d
Merge pull request #285 from kwagyeman/compare_methods
Compare methods
2017-12-23 22:22:22 +02:00
Kwabena W. Agyeman
e2025e8d1e SSIM Code
Image comparison using SSIM. It can be used to detect image
differences... but, the algorithm was designed to compare image quality
and look at compression artifacts. Anyway, it works kinda okay for
detecting frame differences.
2017-12-23 15:01:13 -05:00
iabdalkader
d1c15610bb Add low power example scripts. 2017-12-17 16:15:05 +02:00
iabdalkader
c94eb8f12a Update WINC firmware script 2017-12-06 20:45:48 +02:00
iabdalkader
16f7e96434 Fix WINC fw update script. 2017-12-06 15:30:58 +02:00
iabdalkader
2f32dad550 Add sensor sleep mode example. 2017-11-04 17:45:37 +02:00
Kwabena W. Agyeman
8d63f6d84b Fix up lens_correction and add example script. 2017-10-28 00:31:01 -04:00
Kwabena W. Agyeman
5e3cf92ac4 Add perspective rotation correction code.
This code will help you undo image rotation issues in the X/Y/Z
direction. The demo shows off the frame buffer spinning around.
2017-10-27 01:21:13 -04:00
iabdalkader
3fd020e848 Remove old example. 2017-10-13 16:54:06 +02:00
Ibrahim Abd Elkader
0cf13e8777 Merge pull request #263 from kwagyeman/lsd
Lsd
2017-09-13 18:09:50 +02:00
Kwabena W. Agyeman
5a3153c8b9 Find line segments more stable
Switched the find line segments algorithm to something more stable using
the standard LSD algorithm that's used by OpenCV.
2017-09-13 00:33:31 -04:00
Kwabena W. Agyeman
7dff089e6f Removed QRCodes from the OpenMV Cam M4.
They don't really work that well on it anyway due to having to use a low
res. This makes room for more basic CV features on the M4 which it can
run.
2017-09-03 14:39:14 -04:00
iabdalkader
8557d55745 Update unit-tests script. 2017-08-08 00:22:12 +02:00
Kwabena W. Agyeman
a4e556e7e3 Add find_rects() using AprilTag's quad detector.
It's awesome.
2017-07-13 01:25:23 -04:00
iabdalkader
ef38b68aa2 Move GC collect after loading unit test function. 2017-07-11 23:45:02 +02:00
iabdalkader
db62c80765 Add unit tests. 2017-07-11 23:10:16 +02:00
iabdalkader
200ffeed58 Add LeNet! 2017-07-11 04:10:40 +02:00
Kwabena W. Agyeman
5f4e690fa1 Add find circles.
Now you can find circles with your OpenMV Cam! The alrogithm can eek out
about 7 FPS on a 160x120 image which is quite impressive given how
computationally expensive circle finding is...
2017-07-04 14:09:21 -04:00
Ibrahim Abd Elkader
1bbf18e11d Merge pull request #247 from kwagyeman/master
Add linear regression
2017-06-29 18:28:52 +02:00
iabdalkader
d6b048a9af Add servo shield example. 2017-06-29 16:17:21 +02:00
iabdalkader
97cbeeefe2 Move tests folder. 2017-06-29 16:04:32 +02:00
Kwabena W. Agyeman
cd4ad0dff3 Add linear regression
For easy line following mainly. In non-robust mode the line is computed
using least squares. In robust mode the line is computed using the
Theil-Sen median of slopes method. We do not use the Siegel Median of
Medians operation because it costs more CPU time... but, more
importantly there's no way to improve the centroid estimate so even if
the slope is more robust the line will be drawn in the wrong place.
2017-06-28 01:16:15 -04:00
iabdalkader
7d29104ed6 Add sensor.flush() 2017-06-25 16:48:17 +02:00
iabdalkader
d0b45e3cd4 Fix HoG script. 2017-06-19 01:33:40 +02:00
iabdalkader
32211bcd44 Remove test draw keypoints.
* Draw keypoints called with the wrong args.
2017-06-16 23:58:35 +02:00
Kwabena W. Agyeman
dc6ab59cfd Add Image Writer/Reader
These two new classes allow you to record image data for later viewing
at the same speed the image data was recorded. Unlike GIF/MJPEG the
image data is stored on the file system completely uncompressed in
native frame buffer format making super fast reading and writing
possible. Recording VGA Grayscale at ~13 FPS is possible along with
playing it back. (That's about 30 Mb/s folks).

...

The motivation for writing these scripts is so that you can record video
of something like a line following track, take that video home, and work
on computer vision algorithms for that data.

These classes should make it a lot easier to use the camera at home now.
2017-06-11 15:53:43 -04:00
iabdalkader
8cc740f989 Add RTC example. 2017-06-07 23:00:23 +02:00
Kwabena W. Agyeman
a039b5d1c7 Change skip_frames() to use a 2 second timeout.
This was necessary due to the increase in the frame rate. The previous
method did not correlate to time.

All scripts updated.
2017-05-27 19:31:41 -04:00