python
automatically downloading google images
use googleimagedownload python library. pypi link here’s an example to run by importing if you want a lot of keywords, try this code
deep learning
Focal Loss (a.k.a RetinaNet) paper review
I have heard so much about Retinanet in the realm of object detection and recently I had the chance to read the paper. Surprisingly, the paper is titled with “focal loss” and not “RetinaNet”. The most important lesson that I learned Read more…
python
change anti-aliasing(AA) option in cairocffi for text
By default, cairocffi will apply AA. If you want to disable or finetune the AA option when writing text, then check out the example code. Here is a no-AA image and a default AA settings image. for doc on AA Read more…
python
cv2 resize interpolation methods
INTER_NEAREST – a nearest-neighbor interpolation INTER_LINEAR – a bilinear interpolation (used by default) INTER_AREA – resampling using pixel area relation. It may be a preferred method for image decimation, as it gives moire’-free results. But when the image is zoomed, it is similar Read more…
python
example of using python logging logger
at the main script, insert the code below to setup a logger named debug. In the above code, I have set the debug logger to print its text to both sys.stdout(providing the same effect as a normal print) and to a Read more…
python
converting cv2 matrix to cairo surface(ARGB32 format)
In an earlier post, converting an existing cv2 matrix to cairo surface using cairo. RGB format was demonstrated. However, sometimes the user wants to load a specific image as the background in a semi-transparent manner in the cairo surface, like Read more…
python
converting cv2 img to cairo surface(cairo.RGB format)
When working with cairo, occasions arise when the user wants to directly load a surface from an image. Of course, one can use the create_from_png method but what if the user already has a variable that hold the image data in memory? Read more…
web
nginx configuration confusion due to wordpress
The problem I practically wasted about two days because of this issue. I had no idea that wordpress could indirectly mess up with my nginx configuration. If you are facing the following symptom when setting up wordpress with nginx, you Read more…