Difference between revisions of "GIMP/C2/Adjusting-Colours-Using-Layers/English-timed"
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|'''Time''' | |'''Time''' | ||
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|'''Narration''' | |'''Narration''' | ||
| − | |||
|- | |- | ||
| − | | 00 | + | | 00:22 |
| − | | Welcome to Meet the | + | | Welcome to '''Meet the GIMP'''. My name is Rolf Steinort and I’m recording this in Bremen, Northern Germany. |
| − | + | ||
|- | |- | ||
| − | | 00 | + | | 00:29 |
| − | |In the previous edition I got this image here after editing | + | |In the previous edition I got this image here, after editing. |
|- | |- | ||
| − | | 00 | + | | 00:33 |
| − | |And today I think I should do something to set the colors | + | |And today, I think I should do something to set the colors |
|- | |- | ||
| − | | 00 | + | | 00:39 |
| − | | | + | | because this image is too green. |
| − | + | ||
|- | |- | ||
| − | | 00 | + | | 00:41 |
| − | |There are lot of ways to adjust the color and one of them is the | + | |There are lot of ways to adjust the color and one of them is the '''Curves''' tool. |
|- | |- | ||
| − | | 00 | + | | 00:47 |
| − | |I click on the | + | |I click on the '''Curves''' tool in tool box and then I select the '''Green''' '''Channel''' and pull the curve down. |
|- | |- | ||
| − | | 00 | + | | 00:55 |
|Now you can see that the colour channels and the fog in the image looks like the real fog. | |Now you can see that the colour channels and the fog in the image looks like the real fog. | ||
| − | |||
|- | |- | ||
| − | | 01 | + | | 01:02 |
|Now, I have to adjust the curve in such a way that I get an image which is gray and not green or magenta. | |Now, I have to adjust the curve in such a way that I get an image which is gray and not green or magenta. | ||
|- | |- | ||
| − | | 01 | + | | 01:13 |
| − | |I don’t want to use | + | |I don’t want to use '''Curves''' tool because it damages the details of the image and I can’t correct the damage afterwards. |
|- | |- | ||
| − | | 01 | + | | 01:23 |
| − | |I could use the | + | |I could use the '''Undo''' tool but I will have to redo all the steps after that. |
|- | |- | ||
| − | | 01 | + | | 01:28 |
| − | |So I want to have something | + | |So, I want to have something that will not damage the image and I can adjust later on. |
|- | |- | ||
| − | |01 | + | |01:34 |
| − | | There is such a way which uses a simple filter with layers | + | | There is such a way which uses a simple '''filter''' with '''layers'''. |
|- | |- | ||
| − | |01 | + | |01:39 |
| − | |So I have | + | |So, I have opened here the layer dialog. |
| + | |||
|- | |- | ||
| − | |01 | + | |01:43 |
| − | | | + | | You will see here background which is our original image. |
|- | |- | ||
| − | |01 | + | |01:47 |
| − | | And I simply add a new layer and I select | + | | And I simply add a new layer and I select '''White''' in '''Layer Fill Type''' and give it a name, '''color correction green'''. |
|- | |- | ||
| − | |01 | + | |01:59 |
|Now my image is fully white but I can change the layer mode. | |Now my image is fully white but I can change the layer mode. | ||
|- | |- | ||
| − | |02 | + | |02:05 |
| − | |The layer mode is an algorithm which combines the two layers i.e the original | + | |The 'layer mode' is an algorithm which combines the two layers i.e the original '''Background''' layer and the newly created layer. |
|- | |- | ||
| − | |02 | + | |02:16 |
| − | |So I choose here the | + | |So, I choose here the '''Multiply''' mode. |
|- | |- | ||
| − | | 02 | + | | 02:22 |
| − | |And you get the original image back as it was before. | + | |And you get the original image back, as it was before. |
|- | |- | ||
| − | | 02 | + | | 02:27 |
| − | |The Multiply mode, multiplies the pixels from the background to the pixels from the foreground | + | |The '''Multiply''' mode, multiplies the pixels from the '''background''' to the pixels from the '''foreground''' and divides the result by 255. |
|- | |- | ||
| − | | 02 | + | | 02:37 |
| − | |And in a white picture all the color channels are 255 | + | |And in a white picture, all the color channels are 255; so multiplying by 255 and dividing by 255 gives the starting point i.e. Background. |
| − | + | ||
|- | |- | ||
| − | | 02 | + | | 02:52 |
| But if I reduce one channel in the new layer, it will be reduced in the background also because multiplying by say 200 and dividing by 255 gives less. | | But if I reduce one channel in the new layer, it will be reduced in the background also because multiplying by say 200 and dividing by 255 gives less. | ||
|- | |- | ||
| − | | 03 | + | | 03:06 |
| − | |Now | + | |Now I want to select such a color which has a reduced green channel. |
|- | |- | ||
| − | | 03 | + | | 03:12 |
| − | |Here I have black as foreground colour | + | |Here I have black as foreground colour which I change to background colour and white as foreground colour and you can see that red, green & blue all colour channels have same value i.e 255. |
| − | + | ||
|- | |- | ||
| − | | 03 | + | | 03:31 |
| − | |By the way don’t be distracted by the colours on the slider here. | + | |By the way, don’t be distracted by the colours on the slider here. |
|- | |- | ||
| − | | 03 | + | | 03:36 |
| − | | This is not blue, this is yellow but when I slide this down to a certain point, you see that colours in all the | + | | This is not blue, this is yellow but when I slide this down to a certain point, you see that colours in all the sliders change automatically. |
|- | |- | ||
| − | | 03 | + | | 03:50 |
| − | |Ok I select the green slider here and pull the slider to say something around 211. | + | |Ok, I select the green slider here and pull the slider to say something around 211. |
| − | + | ||
|- | |- | ||
| − | | 03 | + | | 03:59 |
| And I pull the colour which I got as my foreground colour into my image and I get the result which is way to magenta. | | And I pull the colour which I got as my foreground colour into my image and I get the result which is way to magenta. | ||
|- | |- | ||
| − | | 04 | + | | 04:10 |
| − | |But | + | |But I can adjust the intensity of my green reduction with the help of the '''opacity''' '''slider'''. |
|- | |- | ||
| − | | 04 | + | | 04:19 |
| − | | And when I go back to zero I get the old image | + | | And when I go back to zero, I get the old image and when I pull the slider up I can reduce the green channel in the image and also avoid getting magenta into the image. |
|- | |- | ||
| − | | 04 | + | | 04:35 |
| I think this looks quite good. | | I think this looks quite good. | ||
|- | |- | ||
| − | | 04 | + | | 04:38 |
| − | |By using the | + | |By using the '''Layers''' tool, I can do changes anytime I want to and also I can do fine adjustments when more layers are stacked onto it and the change will stay even if I change something in underlying picture. |
| − | + | ||
|- | |- | ||
| − | | 04 | + | | 04:55 |
| There are still changes to be made in this layer as now it appears gray and I want to add a bit of blue. | | There are still changes to be made in this layer as now it appears gray and I want to add a bit of blue. | ||
| − | |||
|- | |- | ||
| − | |05 | + | |05:03 |
| − | |Again I follow the same procedure and make a new layer and called it color correction blue. | + | |Again I follow the same procedure and make a new layer and called it '''color correction blue'''. |
|- | |- | ||
| − | |05 | + | |05:11 |
| And now I want to add a little bit of blue. | | And now I want to add a little bit of blue. | ||
|- | |- | ||
| − | |05 | + | |05:15 |
| − | |For adding blue in the image, I use the Screen | + | |For adding blue in the image, I use the '''Screen''' Mode which is little bit more complicated than '''Multiply''' mode. |
|- | |- | ||
| − | |05 | + | |05:24 |
| − | |In | + | |In '''Screen''' mode, the colors are first inverted and then multiplied and divided and quite complicated. |
|- | |- | ||
| − | | 05 | + | | 05:33 |
| − | |Let me change the foreground colour to black and add the colour | + | |Let me change the foreground colour to black and add the colour I want to add directly and now I have to add a little bit of blue. |
|- | |- | ||
| − | | 05 | + | | 05:43 |
| − | | So slide down the blue slider a bit. | + | | So, slide down the blue slider a bit. |
|- | |- | ||
| − | | 05 | + | | 05:47 |
| And drag the colour into the image. | | And drag the colour into the image. | ||
|- | |- | ||
| − | | 05 | + | | 05:51 |
| − | |This here is supposed to be blue | + | |This, here, is supposed to be blue which looks still like black but it is very dark blue. |
|- | |- | ||
| − | | 05 | + | | 05:59 |
| − | | Look at the image here and when I switch this off, you see the change | + | | Look at the image here and when I switch this off, you see the change. |
|- | |- | ||
| − | | 06 | + | | 06:04 |
| The image is definitely bluish. | | The image is definitely bluish. | ||
|- | |- | ||
| − | | 06 | + | | 06:08 |
|I can switch off both the new layers and by that you get the starting point. | |I can switch off both the new layers and by that you get the starting point. | ||
|- | |- | ||
| − | | 06 | + | | 06:13 |
| − | |When I click on the | + | |When I click on the first layer, we see the reduced channel of green and when I click on 2nd layer it adds a bit blue colour. |
|- | |- | ||
| − | | 06 | + | | 06:22 |
| I think this is too much blue so I reduce the opacity. | | I think this is too much blue so I reduce the opacity. | ||
|- | |- | ||
| − | | 06 | + | | 06:27 |
|I think this looks good. | |I think this looks good. | ||
|- | |- | ||
| − | | 06 | + | | 06:30 |
| − | | I can adjust it later on all the time. | + | | I can adjust it later on, all the time. |
|- | |- | ||
| − | | 06 | + | | 06:33 |
| − | |The | + | |The '''Layers''' tool is very powerful because you can create layer upon layers and in each layer you can change the pixels which are coming up from the lower layer. |
|- | |- | ||
| − | | 06 | + | | 06:44 |
| Possibilities of doing the correction is limitless and you can do it whenever you want. | | Possibilities of doing the correction is limitless and you can do it whenever you want. | ||
|- | |- | ||
| − | | 06 | + | | 06:51 |
| − | |Perhaps here you can slide the opacity slider a bit down to get a good colour and you can play with these sliders which | + | |Perhaps here you can slide the opacity slider a bit down to get a good colour and you can play with these sliders which give real hand full of possibilities to change the color here. |
| − | + | ||
|- | |- | ||
| − | | 07 | + | | 07:05 |
| − | |I think I have to cover the | + | |I think I have to cover the '''Layers''' tool in detail on a special show but for today this is enough. |
|- | |- | ||
| − | | 07 | + | | 07:13 |
| − | |This is Hemant Waidande dubbing for the Spoken Tutorial project and I hope to see you around next time. | + | |This is Hemant Waidande, dubbing for the Spoken Tutorial project and I hope to see you around next time. |
Latest revision as of 18:09, 26 April 2015
| Time | Narration |
| 00:22 | Welcome to Meet the GIMP. My name is Rolf Steinort and I’m recording this in Bremen, Northern Germany. |
| 00:29 | In the previous edition I got this image here, after editing. |
| 00:33 | And today, I think I should do something to set the colors |
| 00:39 | because this image is too green. |
| 00:41 | There are lot of ways to adjust the color and one of them is the Curves tool. |
| 00:47 | I click on the Curves tool in tool box and then I select the Green Channel and pull the curve down. |
| 00:55 | Now you can see that the colour channels and the fog in the image looks like the real fog. |
| 01:02 | Now, I have to adjust the curve in such a way that I get an image which is gray and not green or magenta. |
| 01:13 | I don’t want to use Curves tool because it damages the details of the image and I can’t correct the damage afterwards. |
| 01:23 | I could use the Undo tool but I will have to redo all the steps after that. |
| 01:28 | So, I want to have something that will not damage the image and I can adjust later on. |
| 01:34 | There is such a way which uses a simple filter with layers. |
| 01:39 | So, I have opened here the layer dialog. |
| 01:43 | You will see here background which is our original image. |
| 01:47 | And I simply add a new layer and I select White in Layer Fill Type and give it a name, color correction green. |
| 01:59 | Now my image is fully white but I can change the layer mode. |
| 02:05 | The 'layer mode' is an algorithm which combines the two layers i.e the original Background layer and the newly created layer. |
| 02:16 | So, I choose here the Multiply mode. |
| 02:22 | And you get the original image back, as it was before. |
| 02:27 | The Multiply mode, multiplies the pixels from the background to the pixels from the foreground and divides the result by 255. |
| 02:37 | And in a white picture, all the color channels are 255; so multiplying by 255 and dividing by 255 gives the starting point i.e. Background. |
| 02:52 | But if I reduce one channel in the new layer, it will be reduced in the background also because multiplying by say 200 and dividing by 255 gives less. |
| 03:06 | Now I want to select such a color which has a reduced green channel. |
| 03:12 | Here I have black as foreground colour which I change to background colour and white as foreground colour and you can see that red, green & blue all colour channels have same value i.e 255. |
| 03:31 | By the way, don’t be distracted by the colours on the slider here. |
| 03:36 | This is not blue, this is yellow but when I slide this down to a certain point, you see that colours in all the sliders change automatically. |
| 03:50 | Ok, I select the green slider here and pull the slider to say something around 211. |
| 03:59 | And I pull the colour which I got as my foreground colour into my image and I get the result which is way to magenta. |
| 04:10 | But I can adjust the intensity of my green reduction with the help of the opacity slider. |
| 04:19 | And when I go back to zero, I get the old image and when I pull the slider up I can reduce the green channel in the image and also avoid getting magenta into the image. |
| 04:35 | I think this looks quite good. |
| 04:38 | By using the Layers tool, I can do changes anytime I want to and also I can do fine adjustments when more layers are stacked onto it and the change will stay even if I change something in underlying picture. |
| 04:55 | There are still changes to be made in this layer as now it appears gray and I want to add a bit of blue. |
| 05:03 | Again I follow the same procedure and make a new layer and called it color correction blue. |
| 05:11 | And now I want to add a little bit of blue. |
| 05:15 | For adding blue in the image, I use the Screen Mode which is little bit more complicated than Multiply mode. |
| 05:24 | In Screen mode, the colors are first inverted and then multiplied and divided and quite complicated. |
| 05:33 | Let me change the foreground colour to black and add the colour I want to add directly and now I have to add a little bit of blue. |
| 05:43 | So, slide down the blue slider a bit. |
| 05:47 | And drag the colour into the image. |
| 05:51 | This, here, is supposed to be blue which looks still like black but it is very dark blue. |
| 05:59 | Look at the image here and when I switch this off, you see the change. |
| 06:04 | The image is definitely bluish. |
| 06:08 | I can switch off both the new layers and by that you get the starting point. |
| 06:13 | When I click on the first layer, we see the reduced channel of green and when I click on 2nd layer it adds a bit blue colour. |
| 06:22 | I think this is too much blue so I reduce the opacity. |
| 06:27 | I think this looks good. |
| 06:30 | I can adjust it later on, all the time. |
| 06:33 | The Layers tool is very powerful because you can create layer upon layers and in each layer you can change the pixels which are coming up from the lower layer. |
| 06:44 | Possibilities of doing the correction is limitless and you can do it whenever you want. |
| 06:51 | Perhaps here you can slide the opacity slider a bit down to get a good colour and you can play with these sliders which give real hand full of possibilities to change the color here. |
| 07:05 | I think I have to cover the Layers tool in detail on a special show but for today this is enough. |
| 07:13 | This is Hemant Waidande, dubbing for the Spoken Tutorial project and I hope to see you around next time. |
