![Page 1: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/1.jpg)
File formats
![Page 2: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/2.jpg)
Many different file formats
• We have seen that PhotoPlus can export a picture into a .jpg file
• This is only one of many different digital formats that are used for storing pictures
• Other formats you may have come across include .gif, .bmp, .png, …
• PhotoPlus also supports a format, .spp, which has many useful features that are not supported by any of the above formats
• One of these useful features is– spp files allow a picture to have multiple layers
![Page 3: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/3.jpg)
A picture with multiple layers• This PhotoPlus window shows a picture which has two layers
![Page 4: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/4.jpg)
A picture with multiple layers• This PhotoPlus window shows a picture which has two layers• We can see this by looking at the bottom right corner
![Page 5: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/5.jpg)
A picture with multiple layers• This PhotoPlus window shows a picture which has two layers• We can see this by looking at the bottom right corner• This corner can show various tabs
![Page 6: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/6.jpg)
A picture with multiple layers• This PhotoPlus window shows a picture which has two layers• We can see this by looking at the bottom right corner• This corner can show various tabs
– Currently, the Layers tab is open– It shows two layers– Their names are Layer 4 and Layer 5 but these names are purely coincidental
• They could have been called Layer 1 and Layer 2
![Page 7: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/7.jpg)
A picture with multiple layers• This PhotoPlus window shows a picture which has two layers• We can see this by looking at the bottom right corner• This corner can show various tabs
– Currently, the Layers tab is open– It shows two layers– Their names are Layer 4 and Layer 5 but these names are purely coincidental
• They could have been called Layer 1 and Layer 2
![Page 8: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/8.jpg)
A picture with multiple layers• This PhotoPlus window shows a picture which has two layers• We can see this by looking at the bottom right corner• This corner can show various tabs
– Currently, the Layers tab is open– It shows two layers– Their names are Layer 4 and Layer 5 but these names are purely coincidental
• They could have been called Layer 1 and Layer 2
![Page 9: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/9.jpg)
Layer control• Look at the layer tab
![Page 10: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/10.jpg)
Layer control• Look at the layer tab• Each layer has a little
eye beside it• If the eye is open, the
layer is visible
![Page 11: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/11.jpg)
Layer control• Look at the layer tab• Each layer has a little
eye beside it• If the eye is open, the
layer is visible
![Page 12: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/12.jpg)
Layer control• Look at the layer tab• Each layer has a little
eye beside it• If the eye is open, the
layer is visible• If we click on an eye, it
closes– and the corresponding
layer become invisible
![Page 13: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/13.jpg)
When both layers are visible, we see a boy and a picnic basket
![Page 14: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/14.jpg)
Suppose we close the eye for Layer 4
![Page 15: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/15.jpg)
Suppose we close the eye for Layer 4
![Page 16: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/16.jpg)
Suppose we close the eye for Layer 4
• The picnic basket becomes invisible
![Page 17: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/17.jpg)
Suppose we open the eye again
![Page 18: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/18.jpg)
Suppose we open the eye again
• The picnic basket becomes visible again
![Page 19: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/19.jpg)
Suppose we close the eye for Layer 5
![Page 20: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/20.jpg)
Suppose we close the eye for Layer 5
![Page 21: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/21.jpg)
Suppose we close the eye for Layer 5
• The boy becomes invisible
![Page 22: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/22.jpg)
The two layers have different backgrounds
• The layer containing the boy has an opaque background– coloured white
• The layer containing the basket has a transparent background
![Page 23: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/23.jpg)
The two layers have different backgrounds
• The layer containing the boy has an opaque background– coloured white
• The layer containing the basket has a transparent background
![Page 24: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/24.jpg)
The two layers have different backgrounds
• The layer containing the boy has an opaque background– coloured white
• The layer containing the basket has a transparent background
![Page 25: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/25.jpg)
The two layers have different backgrounds
• The layer containing the boy has an opaque background– coloured white
• The layer containing the basket has a transparent background
![Page 26: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/26.jpg)
Backgrounds and layer ordering
• If the background of a layer is transparent, the content of the layer(s) below it will show through
• If the background of a layer is opaque, the content of the layer(s) below it will not show through
![Page 27: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/27.jpg)
In this picture, the top layer has a transparent background
![Page 28: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/28.jpg)
In this picture, the top layer has a transparent background
• So the bottom layer, and its white background, show through
![Page 29: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/29.jpg)
In this picture, the top layer has a transparent background
• So the bottom layer, and its white background, show through
![Page 30: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/30.jpg)
We can drag a layer up• Suppose we want to drag Layer 5 up to the top
![Page 31: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/31.jpg)
We can drag a layer up• Suppose we want to drag Layer 5 up to the top• Click on it, so that it is highlighted
![Page 32: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/32.jpg)
We can drag a layer up• Suppose we want to drag Layer 5 up to the top• Click on it, so that it is highlighted• And then drag it up with the mouse
![Page 33: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/33.jpg)
We can drag a layer up• Suppose we want to drag Layer 5 up to the top• Click on it, so that it is highlighted• And then drag it up with the mouse• Notice that the basket no longer shows through
![Page 34: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/34.jpg)
So, back to that motivating example
• The desired effect was achieved by using two layers
![Page 35: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/35.jpg)
So, back to that motivating example
• The desired effect was achieved by using two layers
![Page 36: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/36.jpg)
The two layers
![Page 37: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/37.jpg)
The transparency/opacity of the two layers
• The top layer contains the boy– And has a transparent
background
• The bottom layer contains the picture of the girls and picnic basket
![Page 38: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/38.jpg)
The transparency/opacity of the two layers
• The top layer contains the boy– And has a transparent
background
• The bottom layer contains the picture of the girls and picnic basket
![Page 39: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/39.jpg)
The transparency/opacity of the two layers
• The top layer contains the boy– And has a transparent
background
• The bottom layer contains the picture of the girls and picnic basket
![Page 40: File formats. Many different file formats We have seen that PhotoPlus can export a picture into a.jpg file This is only one of many different digital](https://reader030.vdocuments.site/reader030/viewer/2022032702/56649cdf5503460f949a94b9/html5/thumbnails/40.jpg)
The transparency/opacity of the two layers
• The top layer contains the boy– And has a transparent
background
• The bottom layer contains the picture of the girls and picnic basket