 Hello everyone, this is Aria. Yeah, I'm Aria. I'm making an animation with GIMP, it's called Zoom-A-Mut. So I'm one of the developers of GIMP. So today we will show you a small workshop about using GIMP for retouching. So it's nothing, it's not a workshop like about fancy new features. It's just like, it's basics of retouching, how does it work and everything. It's largely based on a much longer course that Aria has been giving in public university in France. So it's of course much shorter because it's like one hour and normally it's like 16 hours. So I uploaded two image files on the link. Here, or you can check on the chat, I uploaded the link. So I filmed at the moment at net-slash-lgm 2020 and here you can have some, you will have two files and two images. Or if you want to play together with us. So our exercise images are like these images. When I start the retouch image, I always copy your original. We will remove these cracks. Easily, we can use the clone tool. Before, if you have a tablet, check input device and your tablet mode is screen. One screen to use this. If the pressure or something not work is because of this one. Maybe if it's like this, it doesn't work. You can do most retouching without tablets. It's also very practical to have a tablet and to have no pressure and changing the size of a city with pressure. And if you have tablet again, you can change the dynamic. Dynamic is the brush option or any type of the clone or brush, not on the ink. All the painting tools. There is a dynamic and you can change. I recommend pressure size like this or pencil generic like that. I made my own dynamic. So I use this. Okay. First of all, I will use a clone. I duplicated the original image and I will make a new layer. Of course, we can do cloning directly on this image like this. But I will make new layer to modify easier. I basically don't touch. Even if you already duplicated it, when you can, you just want to work on a new layer. If someone can't... How to use clone is with control. If you click control, click and then you can clone image from here. Control like this. And I made a layer. There is sample mode on the tool option. There is sample mode. If it's not checked, you cannot copy. By default, it uses the current layer as a source. You write there and it's a source. But with sample merge, the source is like what you see. Yes. It allows to work on another layer while seeing stuff from other layers. Okay. So I try to remove this stuff. Click sample. You can see the brush's edge is strong. It's not really natural. I will change the brush a little bit soft. I change the source quite a lot. Because if I don't change much, it looks really stamped. You can make the opposite down if you need. I'm just saying it's important. I don't know if you can see well. But she's always changing the source of the clone. She doesn't just tick to one source and I keep it. Then you will create patterns or produce always the same thing. So she just always changes the source. When I check, did I write or not? I change the opacity to make it subtly short. So I don't know if you see. I am constantly checking the original comparing. You don't want to work for one hour and then you compare. When you are into it, you don't see something weird. When you compare, you can't see anything which is bad. It doesn't look like it belongs to the image. There is some paint brush. This is a brush texture. So I'm trying to make it continue. Can you zoom on this just to show? I can show it a little bit. Here you can see the paint. Actually I mean the physical brush that the painter used. You can see it makes lines and you don't want to lose it. If you are retouching it's not going to make a flat color. So she is trying to keep this feeling of brush. It's not really easy but I am trying. Maybe some people do like this. I use brush and pick color. Just color like this. You can see it's a very... You lose every texture like this. Contrast it. I see some on the chat. Some people don't understand when you click. So it's a bit hard to explain. You can't see what the source is when she moves here. So she controls click somewhere and it becomes a source. Control, yep. Maybe I will show. So what does... They don't understand why you click. This is just an example. I draw a star. I want to copy it with a clone. Control is make a sample, make a point. Yep, click. And then I draw it. I'm copying right now. If I click here, my copy starts from here. You can see the control click point move together with my mouse moving. But I will show you just the tools simply. Maybe try it yourself. And if you have any question, make a little bit bigger size. We are trying because it's bigger. To fix the crack. So she takes on the side a source and pretty close to the crack. Not far because you think it's the same color when it's far. But sometimes it's very different. It's just illusion. Usually you take a source very close. And I change the opacity and make it slower. I think the opacity makes it blurry. So it's kind of if I click here, I copy this part. This one is you understand right now. It's actually same like we select. And I meant too much bit. Select here and copy. I copy with control art. I copy this layer. Control shift. And do it like this. It's the same but the clone is much easier. And what's natural too. Here it looks like a little bit. Just like this. Little bit. Typically it's kind of feature in like photography or whatever. Like when you erase someone in front of a building. All this kind of stuff. You have a photograph and you have a crack on the wall. Anything you want to erase. Usually they use this. You can use this tool. Maybe if you took a photo and a hair is on your face. And then you want to remove the hair. And you can clone the skin and put on the hair. And then you can make it fix. Okay, right now I will show you another tool. It's a wavelet decomposer. So I duplicate it in my image. And go to filter. And enhance. And wavelet decompose. Okay. I click here. Click. And then you can choose the number. I will show you maybe three. And then you can see like this thing. So basically wavelet decomposes kind of like decompose. You get the exact same result as the original layer. But it decomposes the pixel data in like details. If you like show only residual for instance. Like what they call residual is basically very blurry. Like see only scale three. And then scale two. And you can see like it goes into details. Okay, I will show you if I choose five. I think it's like frequency analysis or something like that. Okay, right now it's more blurry. I compare this one and this one. There is more scales. I choose five. So it's five scales and color. And this one I choose three. So three scales and color. And so, but I think maybe four is perfect. But I will just try with three because we don't have that much time. Okay, so I delete this one. So you can see there is a grain merge. Every gray scales has the more gray grain merge. And this one's normal. And then right now I will remove. I will remove. Yep. This is correct. Okay. So I will check. So just like just to answer a question. We had on the chat someone asked Raymond and asked if the recent recent title was pitch a job like to like fix the broken paint without special intelligence. So this kind of tools are always of course useful. But like as you saw, like for instance, I almost when they were like you could see like the brush stroke of the original painting of this kind of stuff and you want to keep this. So it's always like like the question is more like how much time do you want to spend on it and how perfect do you want to do it. If you do all like all the automatic fixing features are very extremely cool, but they usually don't think like a human being. And what Arion does is like she's actually trying to keep all the little details which makes his painting what it is. It's very different. Okay. So we can see a little bit crack here, but not that much. But I will make it. Here also we use a clone or brush. There's a little bit more details. So I prefer use clone. If you don't know what is your shortcut, you can check on the keyboard shortcuts and clone. And then I put it as I don't know. I don't know is it default or not because I changed a lot of keyboard shortcuts. So yeah, check it and use it. So and if you click, if you double click the tool and then there is a tool option showing show up. Tool option show up. Okay. And again go to layer and the brush is too big. Soft brush. One of the very nice things with this feature or way later compose is like you can actually be somehow much faster by identifying only the scales where you have to work. But and you don't actually need to be as accurate sometimes because you it's the pixel is composed of all these layers and you can actually be faster even if you have more, more layers to work on. You can do it faster. I don't know if it's clear, but I mean very common is this and also you can like really kind of work on because since it like kind of breaks the pixel into details the image into details. You can work for instance only on the color by not touching the texture or the opposite like work on the texture and like keep the color untouched. And so as we want to keep this texture, this grain and that's something which is important. That's something also which is very nice. You can see there is a little cube. Cube like this pixels. If we remove all the texture like this cube and then the result will be blurry, very blurry. So I if it's possible I keep the textures even in the grain merge layer. I don't know. It's very important what Arion is saying is that like you don't want to I mean even if sometimes the grain or something it can be like it's not the reality of the subject or whatever. In this image it is so you want to keep what makes this image. You don't want to make all the colors flat and the point also is not to fix the original painting. It's to repair it, to make it as it was before probably with whatever technique was used on the painting. Then it won't look wrong. I'm using a lot of shortcuts so if you are curious what is the shortcut or something like that. Maybe you can... For example if zoom and out is a control and middle scroll and to move is a middle click, middle scroll click, middle click and move the mouse like that. I'll check original. I'll change it here. If I do with a clone I think there is a lot of colors like that and I should make a lot of copies. I'll fix here also with a wavelet. Right now I'm using clones but if you make them more scans and the image is very blurry and just use a brush it doesn't really matter I think. Right now there's too many details on the color so it's a little bit difficult to fix. I forgot really important thing is save. Save, save. You have to save. One is I can see. On the clone option there is a tool option of clone and there is alignment. If you click none it always go to the... restart from the sample. It always stay here If you click a line it always follow. You can see the sample is following your mouse. So it depends on what you want. You can change the option. I'm using none right now. So here I'm not sure how detailed you get this but you can see the drawing and you must not break this. So that's why she is very detailed and she is trying to use a source really a part which looks like the part she wants to fix. You cannot just take a random source and just make some brush. That's why she is changing all the time also. I don't know if you can see. Actually the way that it composes has also a weak point. It's every single layer we have to touch so it takes more time I think. Right now I can compare. The crack looks weak. I don't know how to say it. It's softer. For some people just directly use clone on the image. This image. Directly cloning image. It will be easier for someone. There is no right answer. It's just a way. It's a way of savory. There is also something you want to mention. I notice this when students don't really understand all the concepts we have to compose. Basically the residual layer is kind of blurry. You don't want to make it sharp. On the opposite, all the scales, you don't want to make them blurry. You can try. If you make the residual sharp or you make the scales blurry it will be completely wrong. I will use a very hard brush and clone. I cloned but there is a circle. You can see the circle. If you see a far from a far and if you see far then you can't see it very well but if you see close it's not really good. Looking good. I want to kill the image blurry. Like this. Can you try it? Click some layers. Someone like PP Silva on the chat was asking if it's normal to layer mod on the three scales, our legacy. Well, I have no idea. Maybe it can be done on... I mean, these are scripts which set it like this. Because they are legacy mods. Probably if we make them on non-legacy now they will be different. So... Yeah. But probably it should be... Maybe the script should be... The way that the compose script should be updated to use new mods. Okay. Anyway, yep. Oh, wow. I think... Oh, we have time. Yeah, we have more time. Okay. So... Okay, here is easier I think. Yep. I will use... I just delete it like that. I'm keeping the texture with the clone. That's very important. Always keep the texture. Keep the grain or whatever you call it. If it looks flat at the end, it's wrong. This part is easier. Second scale. And like this point is our try. One of the most common usage. I mean, if you look for wavelet decompose on the web the most common usage probably is like skin retouching. It's like every tutorial ever on the web about wavelet decomposes about skin retouching. So that's very common. Okay. This one is on fire. And this one... We don't have time so... It looks like very blurry right now here because I didn't change the color here. So right now... This part is only color. So if you want, I think you can use brush too. I will try with brush. I will keep picking colors and it may make a similar color. And with opacity, I will make naturally change the color. Someone has asked if there is like multi-selection layer on this build and yes, it has. You probably don't have this one. But that's also why we had a crush earlier probably. It's very unstable build. Color is not really what's the truth. With a very low opacity. And this... Ta-da! Like you can see it's very nice because it's like as old as grain. It's like you can see the paint. It's not like flat colors. Of course here also... I don't have time. You can change the hardness here. It looks very... You can use smudge tool. If we... If smudge tool is like this, we can smudge line. And double click here and there is a force. If it's a strong... If this is... Not strong, it doesn't really work very much. So choose your... Choose the strong force and mix it with... Maybe hardness. Yup. It's not bad, isn't it? It's not perfect, but... Are eyes getting tired? Something else. No, no, okay. Okay, so yeah. We can use the... Composite composes like this. And maybe... We can show another thing. Yeah. Before, after. Before, after. Before and... Okay. After. Before and we changed here. I didn't really... I can see the crack a little bit yet. But here it looks like... I go... Yeah, yeah. And the nose also. Not... I didn't hear, but... Knocking? Yeah, someone asked... Knocking is the sound of the penny. It is indeed. Ah, okay. Actually, someone asked... Like, asked about multi-selection and like, to show off. Actually, we did show it just before. When we changed the mods of several layers together. Like this. And we can just... Okay. Just put it back. And this one is normal. Should be normal. Anyway, that's... It was not really the point here. I think. Maybe we want to show the dolphin. Oh, we have three minutes? No, we have 30 more minutes. Already? So we don't have a lot of time, but... Organizers told us that we can do it a bit longer. So we will continue if you want to stay around and have a look. So that's another image. It's like... The one before was like a church of Nerezi. Something like that. That image we found on Wikipedia. So like, yeah. Domain public images from Wikipedia. And... And okay, and this one is like Palace of Knossos. Like it's kind of a very old image of dolphins. Okay, I duplicate image and I save. Okay, let's start. Because she always duplicates the image like first thing. You always keep the original. It's not only because you want to keep the original because you can always bring it back anyway. It's also because you want to compare. You always want to compare with the original. It's important. I don't know if you see also like I don't know when she's editing. You can feel a little dizzy because she's always zooming in, zooming out and switching and layer and everything. That's because she always like need to get a lot of point of view like closer from far away and like compare with the original. It's very important stuff on retouching. Maybe let's put the tail. Let's make this tail. Okay, I will copy this tail. Maybe a little bit bigger. And then on the select option you can see the feather edge. Feather edges. If it's right now I will check with the queen mask. King mask is a cube. Country cube? Shift cube? Shift cube. Yup. And then the red one is I didn't select it and white one is I selected. Again, if you do a shift cube again and then you come back to the normal world. So you can see it's blurry. It's because I checked feather edges and I will try no feather edges. Yup. Select. And go to queen mask and then you can see the very straight very sharp edge. Can. So and if it's very big and then you can see very, very, there is a long gradation. So I will make a little bit feather copy it. Maybe not here. With the control you can remove the selection and control C control C and control V all like this. And make a new layer. It's a floating layer. We call it. And if we anchor if we click anchor it stick on the image. But control C control Z. If you click this one create a new layer and then it make own layer and we can bring it here or also we can copy it. Select here is like this and shift and move. And then it's exactly same control C control V but it's more practical. When you work a lot on the canvas like control C control V make a selection and just shift and you move and it's much faster. And directly I do control T I don't know your shortcut but unified transform tool is very lucky because the size is similar very right size. Actually I will remove this part because I want to save the original as much as I can. So I will just focus here and enter and make a new layer and erase. So it's also very important when you do some retouching if you have something broken like in a photograph or here in painting you want to fix what's broken but you don't want to fix other what's not broken. So that's why like here she really removes the part of the tail which like surely she needs to actually keep as much of the original as possible. Maybe this here and this color is a little different. So maybe let's try to I want to show you a color sample how to use color sample. So let's try to make it the color similar. So it's yellow, it's a little bit orange. I think the yellow one is clean one but to show you the color sample I will make this one to make similar this part. So to use color sample on the ruler if you can't see the ruler you can check them show rulers and with control click and drag and make a sample point here one and I will I want to make this color looks like this color so click control click drag and here and then I open color sample point it's here on the any any tab the triangle small triangle add add tab sample point here and then you can see the color one color two color here we will change the hsv color mode and we will check the value this one is color temperature I think and this is the situation and this one is value so okay and with color picker tool you can change the point like this and okay make a similar value two of them more like this I think it's not bad maybe really similar is if it's really similar it's better but okay to be extra you will like like two points that you want to have same color just in case you're not on the right pixel or whatever sorry if it's very different maybe it's another color change a lot so okay and then I go to rgb there's two I will choose this one okay I want to make this one to this one so check rgb I open the curve color curves and value red if you click here if I want to change this color and then I click here but I want to change this color so I click here and I compare with this part and okay my color is here the red point is here click here and 228 down 228 I use keyboard okay and also here is the value so click here and go down oh it's not perfect I saw another value actually it's not very perfect I think we didn't take the right points it's not really looks well can stop okay but again okay we take closer points this is too yellow I think um very it's perfect that's much nicer maybe so here it's not very nice because this should be fixed this part is actually too yellow it's like all orange so that's why actually if you just check the other parts it's much closer close yeah it's really really little bit different but yeah you can I will control Z control Z and under read under read yeah this one is better a little bit really little bit different I'm sure like how to create this okay and this one here is very yellow orange I think I think like this part is difficult to change colors I will just try to use um we've led again I don't know which one will be better we can make it I will make a new layer normal layer and brush here and it looks very opposite so a little bit down eraser opposite a little bit down it changed a little bit can you see everyone on the on the left how how she kind of cleaned the yellow it's not really perfect but yeah I like this you can change the color so it's pretty nice because we let the compost like on the residual part you kind of really work on the color because usually it has most of the color so um you must keep it blurry and like it's kind of really you can really like like work only on the color part without kind of breaking all the details and also texture and also grain everything also this image is a very good example of why like artificial intelligence all the train algorithm they won't work well because like hell is a big hole and like to fill to fill it well you have to really like use your brain well for instance all the small don't know if it's waves but because in the waves the blue strings on these pictures at first like when students when they see this they just want like you know to make copy paste them randomly but we can't say that it's a like you can see it's like really it's a network they're all linked together and if you have to to fix this to fix the whole bottom left part you have to basically recreate this network thin by yourself of course you have to imagine a bit because it's just too much lost but you cannot just like do it randomly and same for the fishes and everything and uh yeah it's uh it's uh if you want to kind of recreate it like it might have been uh hundreds of years ago or a thousand I don't know how old it was uh and you will you have you have to use your brain and you cannot just use like algorithm so we have some comments from linkmorph who says like he wants to use somehow apply some of his techniques to fit on game textures to fix block compression artifacts um it's probably a very good idea this kind of techniques can be using a lot of lot of uh cases I use this like this way and brain function someone wants a brain function well you have to use your own brain whatever okay also like a question which you might have with this concept as it like kind of created the composition of the whole uh image when you want to mix techniques well if if it's actually like if you use clone on other part of the image and uh and decompose uh well like decompose on some part of the image of course you can if it's on its own layer just a clone part you can put it above it but you can also like when you if you clone directly on the original image you may use mask actually like you can add a layer mask on the decomposition group to show what's below so maybe you can make uh you can show this like if you make a fix on this fix on this like or something to some fix some clone or whatever for instance here if she clones this but then she shows composition and a fix is not showing so like here you can ask at the layer mask layer mask here or shift click on here or here I will select here because I fixed here and and I click here if you click here the white box is up here here white box white box white box and I selected the mask layer and oops if I go to the mask layer inside show layer mask and then you can see the black one the black one is make a hole but it's a fake hole it's not real hole on the layer so we can see below layer mask is like kind of like own personal selection for a layer and if I disable layer mask the original image is still here I didn't delete it and so like this or just we can make a new layer and we can do like this also actually I preferred for one hour workshop so I feel a little bit long right now and then maybe I can show you the gradation selection if you want there is a select tool there is a lot of selection tool and you can also use alpha to selection that is if I draw something like this and then I right click on the layer and alpha to selection click show again right click and alpha to selection click and then every alpha every fixer on this layer select even they have the opacity value so for example copy this this layer with this selection Ctrl C and Ctrl V and make a new layer to see like this we can use gradation also I will make a new layer make gradation this one because it's white also fixer so gradation tool option go to gradation tool option and we can choose the transparent one choose like this and so I made the gradation like this right click alpha to selection click and I can do whatever for example I will make a copy again and maybe I can change the color colors and hue saturation and I change hue so to see the object I make it a little stronger and select none then you can remove the selection ok so I selected gradation so the change also have gradation you can apply this kind of technique on filters and basically everything you can make much more complicated selection than just like squares or even with a free select tool you can make gradation selection and everything and so sometimes even when drawing she will make selection and apply some filters on them or gradation selection or you can fix colors for example typically there are some photographs where you have yellow part and it's like really a gradation and you can actually fix this in a kind of reverse gradation with the curves for instance or light values color tools on the other direction not sure it's clear but it's a bit of advanced usage kind of stuff you can do to fix a lot of images and also you can go to mask king mask shift cube and you can fix the you can fix the selection I'm adding the gradation like this and go back to normal world and maybe I will change again the hue saturation color hue saturation maybe I can change the value a little bit the lightness a little bit the saturation a little bit down like this okay selection so it's a little bit a lot but you can see it changes entirely like you change the hue like close but with a gradation on the bottom left and like if it's not gradation and like this there is a feather I selected with feather so you can't see really much but select if there is no feather edge it looks like really I change it this part to this part like this to show you I did a little bit extremely yeah if there is a gradation a little bit looks natural yeah I think the time is anyone has questions? last questions before we go it's our cap everybody followed where or you guys understood the or okay last questions okay so unfortunately we have a record of viewers with 65 viewers at one point nice thank you isn't like a score yeah brain and cap functions in GIMP are the best in GIMP maybe if nobody has any question we can leave it as is yeah thank you I learned a lot from PR course and no problem thank you for the technical issues no problem I want to show our face but I don't know oh yeah hi everybody thank you have a nice evening bye bye