The imagehash difference is 30, which is the farthest from 0. The last pair shows the comparison of two totally different images. The second image (image_b) is actually an edited version of the first image (image_a). The second pair compares two similar images. The first pair consists of two same images and the imagehash difference is 0. The two images are relatively similar.įor more clarity, let’s examine imagehash applied to the following 3 pairs of images. It means that there are 3 pixels with different boolean values. The imagehash difference of the two images/matrices above is 3. (5) Imagehash difference is the number of different values between the two images. Now, each of the 64 pixels has a boolean value of true or false. (4)The 64 pixels are checked whether they are bigger than the average value. (3) The average value of the 64 pixels is computed. (2) The image sizes are reduced to be smaller, for example, into 8×8 pixels by default. (1) The images are converted into greyscale. Two images are more similar if the imagehash difference is closer to 0.Ĭomparing the similarity of two images using imagehash consists of 5 steps. If two images are identical or almost identical, the imagehash difference will be 0. The similarity of the two images is detected using the package “imagehash”. # import packagesįrom ee import DecisionTreeClassifier The package “metric” computes the accuracy score of the true label and predicted label. “fuzzywuzzy” detects the similarity of two texts. “imagehash” computes the similarity of two images. There are 4 basic packages used in this script: NumPy, pandas, matplotlib, and seaborn. The data comes from a competition held in Kaggle. If the pair of products have similar or the same images or text names, that means that the two products are the same. Each of the two products has image and text names. The goal of this discussion is to detect whether two products are the same or not. Unlike the previous article, this article discusses general image analysis, not satellite image analysis. We'll be back on the morning of January 5th we'll be here parttime between now and then, thanks.After my latest published article about satellite image analysis “ Image Analysis and Mapping in Earth Engine Using NDVI“, now it is another article about image analysis again. (With apologies to Clement Clarke Moore, may he forgive my doggerel.) It's important to embrace the concept of "reflowing text" as you embark on your digital publishing journey, as this will save you a lot of aggravation and stress. You can read about Fixed-Format eBooks in the eBook Productions section by clicking that link, if you think you need that layout option.) That's why the images and the text can "come apart." (This doesn't happen in Fixed Format, but that's a route you should take only if absolutely required. When the user makes the font larger, the text becomes separated from the image on a new "page." This is the challenge of ebooks-they are constantly changed by the readers, using smaller and larger fonts, different-sized devices and in some cases, even different fonts.ĭevices don't really "understand" the idea of two separate elements-an image and its caption-as being part of the whole. Therefore, while we do the best we can, we can’t guarantee that certain things will stay together on every device, at every font size, and every font, available on the market.Īs you can see in the linked articles, the text highlighted in purple (for the Prince and the Pauper examples) is on one page with the image when the font is smaller. We put the commands in there, to "future-proof" the book, so that when the devices do honor the commands, the images and captions will stay together-but for now, the vast majority simply ignore it. Or, it may move a caption for an image to a new screen.įor some things, like images with captions, we can use commands called “keep-togethers," but not every device honors this command. This means that when people resize the font, as the sample images in those articles show, the reflow of the text might move an image to the next screen. As we discuss in Text reflows-or wraps. and Is it true that readers can change how my book looks?, text in ebooks reflows. Generally, the answer is really “ no,” because unlike print formatting, eBook formatting does not have precise control over vertical and horizontal alignment. ![]() You Can't Force Images and Text to Stay On The Same Page
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