I have extended the ‘Is it a bird?’ kaggle notebook developed for Lesson 1.
The model in my kaggle notebook aims to classify three human expressions: disgust, contempt or neutral. I thought that the main challenge would be for a model to discriminate between disgust and contempt, but it seems that separating contempt from neutral is harder, perhaps because of their subtlety.
The accuracy of my model is on the low side (just above 50%) but my extremely rapid literature review (via Google) tells me that this is not unusual for the type of model and data I’ve used.
As many others in this forum have highlighted, it feels uncomfortable using a fair bit of packaged code (as efficient and helpful as it is) but I pushed through it to finish my first notebook for this course. I am trusting the process
I just completed the first two lessons, and I’ve attempted to build a model addressing a common issue in India: the prevalence of individuals driving scooters and other motorized vehicles without wearing helmets.
Utilizing the steps and methodologies presented in lessons 1 and 2, I’ve built an image classifier that aims to detect drivers who are not wearing helmets. As of now, the model is still in its early stages. However, I plan to refine and improve it when I have the opportunity.
I’m sharing the current version of my work below. Any feedback or suggestions would be greatly appreciated!
I would like to know why I can’t Image.to_thumb to work in a code block in kaggle. Anybody able to help
# run the model against some images
import os;
errors = []
files = os.listdir('/kaggle/working')
for x in files:
try:
vehicle,_,probs = learn.predict(PILImage.create(x))
print(f'Testing: {x}')
print(f"This is a: {vehicle} [confidence: {(max(probs) * 100):.2f}%].")
img = Image.open(x)
img.to_thumb(128,128) ### Doesn't seem to work in a code block
except:
errors.append(x)
errors
I just wanted to share my results of lesson 2 combined with Bing’s image search code from lesson 1. I’ve download brain MRI scans from Bing search and did try to differentiate between regular and Alzheimer’s MRI brain scans.
Given the small dataset, the results were not perfect and are naive, but maybe you can give me a few hints on how to get a better dataset. As I go along with the course, one of my end goal projects would be to improve accuracy or predict the likelihood of developing Alzheimer’s brain MRI changes.
Below are the results. Is it normal error_rate increase with more epochs or my data is flawed? Oddly enough I got a better results with ‘resnet34’ vs ‘vit_tiny_patch16_224’ - 0.0444.
Thank you @suvash for sharing this notebook and demo, really interesting. I have a quick question, for example, if the dataset is not in the format you have right now rather you have a folder where each sub-folder is labelled and within that folder are images. Do you know how would you upload this local folder on a machine and do multi-classification? Or let me know if the Fastai course will cover it later. Thanks
Hi @JuanHaunted thank you for sharing this. I am curious why you did not use “multi-category” block in data loaders and used a simple “category” block. Wouldn’t your problem be multi-class? Thank you
As an Environmental Engineering graduate, sorting different types of solid waste felt like a good place to start. So after completing lesson 1 that’s what I did. I categorized 5 types of wastes that are commonly found in dumpster: organic waste, electronic waste, paper and cardboard waste, glass waste, and metalic waste. Do let me know if I can improve anywhere!
Hi @mab.fayyaz I think multi-category is for images with objects more than one categories, or none. Thje name confused me too but reading this clarified.
Hello Everyone,
So this is my project based on lesson 2 of the course which focused more on production softwares, so I tried creating the project from scratch and deployed it in the similar manner.
Project Details: Bird Classifier
The Project is made using Fastai module and I have used the ResNet50 Architecture in the Project and fine tuned it for 5 epochs resulting in the app deployed on HuggingFace Spaces.
Thanks for asking. The course and docs will definitely cover more builtin as well as custom ways to load your data. I can also recommend the datablock tutorial if you’re interested right away, but there’s no rush either if you’re progressing with the course.
Started the fast.ai course this week, created a small project on HF: Painters - a Hugging Face Space by viktor-kertanov.
Base on a given picture it defines who’s the author of a painting. Currently there are only 5 impressionists painters: Cezanne, Pissarro, Van Gogh, Monet, Renoir. The data was collected from artsy.com, <~ 200 works from each artist.
Accuracy of the model is ~ 85%, which seems not that bad. As a side bonus, found out that there are a lot of museums (like MET) that have an open API with all their collection, which sounds intriguing.
Great thanks for your organization and design of this amazing course. After finishing Lesson 1, I started to think about possible interesting image classification questions. One day when I was going grocery shopping with my fiancee, she mentioned to me that we should buy some zucchini for our vegetable, which can be easily cooked using a conventional oven. Then I asked, “Isn’t it a cucumber?”. She said “Nope, look at the label, it is zucchini.” This is how I find zucchini looks very similar to cucumber, which motivates me to simply use what I learned in Lesson 1 to build a zucchini-cucumber classifier.
Here are some screenshots of this toy classifier (just for fun and just in case there are some cucumbers mixed into the zucchini):
I think one interesting takeaway here is that data quality is really important. We need to create some variations for each category to let the model learn different scenarios. For instance, I put “table” and “cut” as additional strings to download photos of vegetables in different statuses.
I treat this procedure as a way to understand the end-to-end process. I may further think about how to put a model into production (or a more interactive way with a more dynamic online environment to interact with real-world data) in future lessons (e.g. Lesson 2).
after lesson 1 video, I tried classifying types of basketball shots. Here is the notebook. I’m curious if the third thing I found interesting is common.
