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I'm looking for a book on Photoshop - 'Inside Photoshop".
I'm looking for a book about the workings of Photoshop CC. I don't
know what it is called, in fact I don't even know if it exists, but if it does exist it might be called something like 'Inside Photoshop'. I'm not interested in learning how edit photographs (for beginners), I'm not interested in learning how use the various tools nor am I interested in learning how to push their various buttons. What I would like to know is what goes in inside Photoshop when I (for example) create a clipping mask. This doesn't mean that I want to know the actual code but I would like to know what the code is doing. Is there such a book? Does anyone know? -- Regards, Eric Stevens |
#2
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I'm looking for a book on Photoshop - 'Inside Photoshop".
In article , Eric Stevens
wrote: I'm looking for a book about the workings of Photoshop CC. I don't know what it is called, in fact I don't even know if it exists, but if it does exist it might be called something like 'Inside Photoshop'. I'm not interested in learning how edit photographs (for beginners), I'm not interested in learning how use the various tools nor am I interested in learning how to push their various buttons. What I would like to know is what goes in inside Photoshop when I (for example) create a clipping mask. This doesn't mean that I want to know the actual code but I would like to know what the code is doing. you want a book on image processing, although it's rather obvious how it works. Is there such a book? Does anyone know? many of them. |
#3
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I'm looking for a book on Photoshop - 'Inside Photoshop".
On Wed, 21 Mar 2018 21:09:47 -0400, nospam
wrote: In article , Eric Stevens wrote: I'm looking for a book about the workings of Photoshop CC. I don't know what it is called, in fact I don't even know if it exists, but if it does exist it might be called something like 'Inside Photoshop'. I'm not interested in learning how edit photographs (for beginners), I'm not interested in learning how use the various tools nor am I interested in learning how to push their various buttons. What I would like to know is what goes in inside Photoshop when I (for example) create a clipping mask. This doesn't mean that I want to know the actual code but I would like to know what the code is doing. you want a book on image processing, although it's rather obvious how it works. Rather obvious? OK then, you tell me what goes on when PS creates a clipping mask. I don't need to know what it does (I already know that), I don't want to know how to create a clipping mask (I already know), I don't want to be told about the indented layer names, down arrow and layer name underlining. What I want to know is when I create a clipping what is it that goes on in PS with the basic entities that PS uses to manipulate images. I bet you can't. Is there such a book? Does anyone know? many of them. How about a few names. -- Regards, Eric Stevens |
#4
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I'm looking for a book on Photoshop - 'Inside Photoshop".
In article , Eric Stevens
wrote: I'm looking for a book about the workings of Photoshop CC. I don't know what it is called, in fact I don't even know if it exists, but if it does exist it might be called something like 'Inside Photoshop'. I'm not interested in learning how edit photographs (for beginners), I'm not interested in learning how use the various tools nor am I interested in learning how to push their various buttons. What I would like to know is what goes in inside Photoshop when I (for example) create a clipping mask. This doesn't mean that I want to know the actual code but I would like to know what the code is doing. you want a book on image processing, although it's rather obvious how it works. Rather obvious? in general yes, although the exact algorithms aren't. OK then, you tell me what goes on when PS creates a clipping mask. I don't need to know what it does (I already know that), I don't want to know how to create a clipping mask (I already know), I don't want to be told about the indented layer names, down arrow and layer name underlining. What I want to know is when I create a clipping what is it that goes on in PS with the basic entities that PS uses to manipulate images. I bet you can't. you'd be wrong. Is there such a book? Does anyone know? many of them. How about a few names. start he https://en.wikipedia.org/wiki/Sutherland*Hodgman_algorithm https://en.wikipedia.org/wiki/Greiner*Hormann_clipping_algorithm |
#5
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I'm looking for a book on Photoshop - 'Inside Photoshop".
On Thu, 22 Mar 2018 08:38:47 -0400, nospam
wrote: In article , Eric Stevens wrote: I'm looking for a book about the workings of Photoshop CC. I don't know what it is called, in fact I don't even know if it exists, but if it does exist it might be called something like 'Inside Photoshop'. I'm not interested in learning how edit photographs (for beginners), I'm not interested in learning how use the various tools nor am I interested in learning how to push their various buttons. What I would like to know is what goes in inside Photoshop when I (for example) create a clipping mask. This doesn't mean that I want to know the actual code but I would like to know what the code is doing. you want a book on image processing, although it's rather obvious how it works. Rather obvious? in general yes, although the exact algorithms aren't. OK then, you tell me what goes on when PS creates a clipping mask. I don't need to know what it does (I already know that), I don't want to know how to create a clipping mask (I already know), I don't want to be told about the indented layer names, down arrow and layer name underlining. What I want to know is when I create a clipping what is it that goes on in PS with the basic entities that PS uses to manipulate images. I bet you can't. you'd be wrong. Is there such a book? Does anyone know? many of them. How about a few names. start he Apat from the fact that neither of the following are books and Wikipedia doesn't seem to know anything about either of them they are algorithms for implimenting a particular schema for one particular clipping implimentation. Even if they existed they would not be what I was looking for. https://en.wikipedia.org/wiki/SutherlandÂ*Hodgman_algorithm "Wikipedia does not have an article with this exact name. Please search for SutherlandHodgman algorithm in Wikipedia to check for alternative titles or spellings." https://en.wikipedia.org/wiki/GreinerÂ*Hormann_clipping_algorithm "Wikipedia does not have an article with this exact name. Please search for GreinerHormann clipping algorithm in Wikipedia to check for alternative titles or spellings." -- Regards, Eric Stevens |
#6
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I'm looking for a book on Photoshop - 'Inside Photoshop".
In article , Eric Stevens
wrote: Is there such a book? Does anyone know? many of them. How about a few names. start he Apat from the fact that neither of the following are books and Wikipedia doesn't seem to know anything about either of them yes wikipedia most certainly does know, and not just the two i listed, but many others. there are also books covering the various algorithms, but it's much easier to read various web sites, which doesn't need to be wikipedia, given that you seem to be having difficulty connecting to it. they are algorithms for implimenting a particular schema for one particular clipping implimentation. yep. that's what they are. there are more than just those two. Even if they existed they would not be what I was looking for. they do exist and it's exactly what you claim to be looking for, however, you will have to learn how to follow a link first. https://en.wikipedia.org/wiki/Sutherland-Hodgman_algorithm "Wikipedia does not have an article with this exact name. Please search for SutherlandHodgman algorithm in Wikipedia to check for alternative titles or spellings." https://en.wikipedia.org/wiki/Greiner-Hormann_clipping_algorithm "Wikipedia does not have an article with this exact name. Please search for GreinerHormann clipping algorithm in Wikipedia to check for alternative titles or spellings." not only does wikipedia have articles for both of the above, but both links go directly to the respective pages. you did something wrong or your ****ty newsreader is once again not handling links correctly. in other words, user error. in addition to descriptions, wikipedia also lists several additional algorithms and other references: Sutherland*Hodgman algorithm See also[edit] € Weiler*Atherton clipping algorithm € Vatti clipping algorithm € Clipping (in rasterisation) External links[edit] https://www.cs.drexel.edu/~david/Cla...-05_Polygons.6. € Polygon clipping and filling Describes the algorithm using images that are easy to understand. Greiner*Hormann clipping algorithm See also[edit] € Vatti clipping algorithm € Sutherland*Hodgman clipping algorithm € Weiler*Atherton clipping algorithm € Boolean operations on polygons References[edit] 1 Greiner, Günther; Kai Hormann (1998). "Efficient clipping of arbitrary polygons". ACM Transactions on Graphics. 17 (2): 71*83. Retrieved 2014-05-17. 2 Ionel Daniel Stroe. "Efficient Clipping of Arbitrary Polygons". Retrieved 2014-05-17. as i said, it's a start, and now you know what to look for when searching for books or other materials. |
#7
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I'm looking for a book on Photoshop - 'Inside Photoshop".
"Eric Stevens" wrote
| What I want to know is when I create a clipping what is | it that goes on in PS with the basic entities that PS uses to | manipulate images. | Take a simple example of a rectangle. (An irregular shape would be more complicated.) You have the original raster image. It's composed of byte values that represent pixels. In a typical 24-bit image there will be 3 bytes, RGB, per pixel. First, the editor has loaded the image, which means reading in the pixel data, which is in rows. For a 100x100, 24-bit color image you have 300 bytes per row, with 100 rows, to contain the image data. Now you select a masking area of, say, 20x20 inside that image. To actually work with that area the editor will need to create another bitmap. Same bytes, pixels and rows. But this time it will start (probably) at the top left corner of the original image and move in to the top left corner of your masking selection. Then it will read 20 pixels across (60 bytes) and 20 rows down. That set of byte values will represent the mask area. Now you have an original image and a mask, which is a second image. If you look at a BMP file's bytes in a hex editor you can see how it works. BMP is the simplest format. There are 54 bytes of file header that contain info about color depth, size, etc. Then there are the bytes for pixels. (There's one minor complication, that rows have to be padded if necessary to make the number of bytes divisible by 4, but that's not important to this explanation.) If you create a white image and save as BMP, then open it in a hex editor, you can see the pixel data: FF FF FF FF FF FF If you then save a red image you can see that: 00 00 FF 00 00 FF starting at the 55th byte. That's the whole shebang. A graphic editor is dealing with those byte values. Some of the Mac users bristle at my use of the word bitmap, but raster images are the same in any venue. It's a bitmap. A map, or grid, of color values, stored as byte data. (Or sometimes as bit data, as with a 2-color image.) A RAW is different, but a JPG, PNG, BMP, or most TIF files are simply raster images, which are represented by rows of bytes, in a variety of packages. Once it's opened in a raster graphic editor it's a byte stream that represents the pixel grid. The only difference with Apple is that they tend to use "consumer" language. Just as Microsoft might describe a car as a transportation device while Apple might describe the same thing as "a modern solution to get where you're going". You can't look at JPG bytes and see color pixels because first, there's usually a big header. Then the actual pixel data is compressed. But once it's unpacked it's the same thing: A bitmap. A grid of pixel values stored as byte data. |
#8
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I'm looking for a book on Photoshop - 'Inside Photoshop".
In article , Mayayana
wrote: Take a simple example of a rectangle. (An irregular shape would be more complicated.) that's what he's asking about. You have the original raster image. It's composed of byte values that represent pixels. In a typical 24-bit image there will be 3 bytes, RGB, per pixel. except when it isn't. First, the editor has loaded the image, which means reading in the pixel data, which is in rows. For a 100x100, 24-bit color image you have 300 bytes per row, with 100 rows, to contain the image data. it's normally wider for optimization reasons as well as more than 1bpc. Now you select a masking area of, say, 20x20 inside that image. To actually work with that area the editor will need to create another bitmap. nope. clipping regions are normally paths, not bitmaps, even for simple cases such as that one. Some of the Mac users bristle at my use of the word bitmap, but raster images are the same in any venue. It's a bitmap. A map, or grid, of color values, stored as byte data. (Or sometimes as bit data, as with a 2-color image.) no, they bristle at your ignorance as well as your anti-apple attitude. A RAW is different, but a JPG, PNG, BMP, or most TIF files are simply raster images, which are represented by rows of bytes, in a variety of packages. so is raw. Once it's opened in a raster graphic editor it's a byte stream that represents the pixel grid. The only difference with Apple is that they tend to use "consumer" language. more anti-apple crap. all companies use consumer language for consumers. for developers, designers, etc., they don't. apple in particular uses concepts and terminology well above your pay grade. |
#9
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I'm looking for a book on Photoshop - 'Inside Photoshop".
On 2018-03-22 14:45:08 +0000, Mayayana said:
A RAW is different, but a JPG, PNG, BMP, or most TIF files are simply raster images, which are represented by rows of bytes, in a variety of packages. Once it's opened in a raster graphic editor it's a byte stream that represents the pixel grid. The only difference with Apple is that they tend to use "consumer" language. Just as Microsoft might describe a car as a transportation device while Apple might describe the same thing as "a modern solution to get where you're going". The traditional differences between Macs and PCs are that Macs provide you with Apple script and, since the introduction of OSX more or less out of the box shell script functionality. That in conjunction with that user data mostly are stored in a library folder makes macOS systems much more effective and manageable. :-)) This could change though... -- teleportation kills |
#10
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I'm looking for a book on Photoshop - 'Inside Photoshop".
In article , android
wrote: The traditional differences between Macs and PCs are that Macs provide you with Apple script and, since the introduction of OSX more or less out of the box shell script functionality. That in conjunction with that user data mostly are stored in a library folder makes macOS systems much more effective and manageable. :-)) This could change though... no. |
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