![]() ![]() masks that define which pixels are eligible to be updated.traits associated with each channel to specify whether the pixel channel is copied, updated, or blended.all the pixels in memory to take advantage of speed-ups offered by executing in concert across heterogeneous platforms consisting of CPUs, GPUs, and other processors. ![]() one or more pixels simultaneously in different threads of execution.0.0072973525628) as well as values that exceed the quantum depth (e.g. a high-dynamic range pixel that can include negative values (e.g.a pixel component that is unsigned (65311) or in a floating-point representation (e.g.pixels outside the boundaries of the image (e.g.pixel at 5,1 from image 1 and pixel at 5,1 from image 2) pixels from two different images (e.g.an arbitrary region of pixels from the image (e.g.a single column or columns of pixels (e.g.In addition, some image pixels may require attenuation, some formats permit more than one frame, and some formats contain vector graphics that must first be rasterized (converted from vector to pixels).Īn efficient implementation of an image processing algorithm may require we get or set: colorspace (e.g sRGB, linear RGB, linear GRAY, CMYK, YUV, Lab, etc.).Within these formats we find differences in: However, there are hundreds of image formats such JPEG, TIFF, PNG, GIF, etc., that makes it difficult to access pixels on demand. And in the case of an image sequence, we need access to any pixel of any region of any image in the sequence. To convert, edit, or compose an image in an efficient manner, we need convenient access to any pixel anywhere within the region (and sometimes outside the region). Architecture OverviewĪn image typically consists of a rectangular region of pixels and metadata. To fully benefit from this discussion, you should be comfortable with image nomenclature and be familiar with computer programming. However, if you want to know more about the software and algorithms behind ImageMagick, read on. Like the citizens of Oz, if you feel comfortable that ImageMagick can help you convert, edit, or compose your images without knowing what goes on behind the curtain, feel free to skip this section. They accepted his wisdom and benevolence without ever questioning the who, why, and where of his power. Once combined, I wish to write the result to disk and do not wish to keep the mpc files in any way after the command.The citizens of Oz were quite content with their benefactor, the all-powerful Wizard. Then after Ive taken care of the above I wish to combine them together with a mix of mpc and images from disk onto the blank image. I wish to do something similar with source3 but instead I only want to apply one subsource layer to it. I want to load source2.png, apply subsource1 and subsource2 ONLY to source2.png using Dst_Out algorithm and then store it in memory for the overall combine to come later. Snibgo reccommended using mpc files to do so and after reading about them seemed like the best fit for what I stated above.Īs far as how to describe how I want the code to run: However, I need to go a step further and modify a couple of the images before they get added to the overall image. The overall goal and basic premise was to be able to combine images onto a blank image, which thanks to the help of snibgo I was able to get working. I want to write to the disk as little as possible to keep the process quick. I am programmatically creating a string to call using PHP Exec() to combine a bunch of images together sometimes in a specific way. I changed the names some and have added a list of goals and have added more details to try to make it clearer what I wish to accomplish So someone can rewrite it without using temporary files. I suggest If you write your code with using temporary files so as to make your output clear. Or you have 4 input files and want 3 output files? It looks you have 7 input files (img.png, img_1.png, img_2.png, img_3.png, out1_1.png, out_2.png, out_3.png) and want to get 1 output file. Does that mean that there needs to be some parenthesis added to get the following to workīecause of your odd usage of parenthesis (of the first post), I cannot figure it out what you want to accomplish. ![]()
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