I am a deep learning expert from Hungary, working as a junior researcher for the Institution of Applied Mathematics.
I have of experience with computer vision, specifically image classification tasks.
I looked at the LEGO image tools you linked, and I'm certain I can generate the dataset based on your requirements. I can also use data augmentation to make the model even more robust if it will be used to classify photos.
I can accomplish the classifying task using cutting-edge convolutional neural networks fine-tuned for your application. I can use AlexNet, or the newer models of VGG and RresNet with transfer learning. If you send me some sample of what specifics you want to classify and images, if you have any, I can create a simple sample model and provide it free of charge before choosing freelancer.