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There is an End-of-data marker FF D9, but you can't scan for it blindly, because those bytes can also appear within a JPEG image. … In fact, the FF D8 start-of-image marker can also appear within a JPEG image for the same reason. Therefore, your technique is invalid. …

I'll focus on problems in compare(). You're using the wrong equality comparison for the bitmap size. You need to compare the contents of the Size objects, not whether they are the same reference. A …

You seem confused. Given two objects, a.Equals(b) tests whether they have equivalent content. Basically, what you wrote as UnnamedCompareMethodB() should actually be the Equals() method. I wouldn't …

Half of the code deals with reading a file into a byte array, which is a very generic operation. Split the code into two functions, one accepting a file and another accepting a byte array. The forme …

I suggest: public interface ImageTransformation { public Pixel[][] transform(Pixel[][] image); } public class Clockwise90Rotation implements ImageTransformation { ... } public class AntiClockwise90Rotation … = t.transform(image); } …

I think you've gotten the bounds of the sample area wrong. j should range from left to right, and rowStartPosition should not include left. (0xff & ((int)yuvImage[bytePosition])) deserves a comment e …

Overview As I understand it, you want use GNU Make to do… content/part?/raster/bw/* — the ultimate goal content/part?/raster/col/* — a staging place before conversion to grayscale content/part?/r …

Semantic markup The search.png image is an artifact of the presentation; it isn't really part of the content. Therefore, it should not be written in the HTML. … For your real site, you should use relative URLs and a pre-scaled magnifying glass image. …

I think that changeColor or substColor would be a more appropriate name for this function. I don't see why the function should write out its result to a file. That's a violation of the Single Respon …

Image decoders are hard to write well — you're wandering onto a bloody battlefield. … You could end up calling any four-character function or constructor in the main namespace, based merely on whatever chunk code the "image" specified. …

PEP 8 specifies four spaces per level of indentation. Since whitespace matters in Python, this is a pretty strong convention. You should round() the results to the nearest integer rather than trunca …

For security, I've explicitly listed the allowed characters for the image filename. # You probably want to analyze PATH_INFO rather than QUERY_STRING $path = pathinfo($_SERVER['PATH_INFO']); if (! …

This plugin looks like an attempt to reinvent image maps using a canvas. Most of this code could be eliminated in favour of techniques that were available in 1997. …

Ok, i think i have found the best solution myself, with a little help from Otus, for the zip-set-unzip part, though i think my way of getting it to integers is more pythonic? r1 = numpy.array(numpy.r …

I would expect the library to behave more like a printer, in that it would produce an image for every showpage command. …