#3770 Σ0ρλδ!!

Last week, most of the code implementation was completed.  Errors and any kinks that occurred were ironed out. Special stress was given to the plate recognition part. GUI implementation was also tried but some issues have crept up. If no possible solution arises,the idea will be dropped. 

This week using the Mastering OpenCV book, I tried to implement the ANPR algorithm in code form. The plate localization part was stressed this week. Some parts of code are not explained in detail in book. Have to go through code once more to gain better understanding. 

This week was used in understanding the ANPR algorithm and its different components and steps. There are seven primary algorithms that the software requires for identifying a license plate: Plate localization – responsible for finding and isolating the plate on the picture. Plate orientation and sizing – compensates for the skew of the plate and adjusts the dimensions to the required size. Normalization – adjusts the brightness and contrast of the image. Character segmentation – finds the individual characters on the plates. Optical character recognition. Syntactical/Geometrical analysis – check characters and positions against country-specific rules. The averaging of the recognised value over multiple fields/images to produce a more reliable or confident result. Especially since any single image may contain a reflected light flare, be partially obscured or other temporary effect.

This week the images collected were used to train ANN. Some jugaad   was also employed to overcome difficulties and Ouroboro effect was also used to create normalized segmented images of characters.  It could be the Achilles' heel of the main application. But still it might be workable. 

Most of the week was spent in gathering the images to train SVM, but still I was unable to gather the required number of images. It was quite an interesting week in terms of facing from angry owners to disgruntled guards. Finally I've decided to use the older XML file as it works pretty well with the given specifications. 

This week was devoted in learning how to extract lines, contours and components of images. Day 46: Detecting Image Contours with the Canny Operator Day 47:  Detecting Lines in Images with the Hough Transform Day 48: Fitting a Line to a Set of Points Day 49:  Extracting the Components & Contours Day 50: Computing Components & Shape Descriptors

This week using morphological operations, image transformations were done and use of filters on them. Day 41: Opening and Closing Images using Morphological Filters Day 42: Detecting edges and corners using morphological filters Day 43: Filtering Images using Low-pass Filters Day 44: Filtering Images using a Median Filter Day 45: Applying Directional Filters to Detect Edges