Which DPI should I use?
I know how to get the DPI on an image in C# .HorizontalResolution; .VerticalResolution; But what's the difference between these two lines of code, could these values be different than each other?
My point Is; When I scan an image using a printer, it asks me to set the dpi for the scanned image. So, that value will be represented inside .HorizontalResolution; Or .VerticalResolution;?
c# image bitmap dpi
asked Jan 1 at 21:23
AhmadAhmad
1049
add a comment |
I know how to get the DPI on an image in C# .HorizontalResolution; .VerticalResolution; But what's the difference between these two lines of code, could these values be different than each other?
My point Is; When I scan an image using a printer, it asks me to set the dpi for the scanned image. So, that value will be represented inside .HorizontalResolution; Or .VerticalResolution;?
c# image bitmap dpi
asked Jan 1 at 21:23
AhmadAhmad
1049
As of now, these properties return the same value. In the future, who knows. But all DPI values should be considered in relation to the device that will show/print/scan the Bitmap. Hans Passant gives an easy-to-read description here: Difference between Bitmap.Height and VerticalResolution and here: Image.HorizontalResolution and Image.VerticalResolution. Also in relation with what you're asking.
– Jimi
Jan 1 at 22:33
The values usually are the same but could well be different. Depending on the source this would mean that the image will be stretched when displayed by a device or processed by code that honors these values. GDI drawing with DrawImage will. The scanner will almost certainly put the same value there. You can play by changing it later in code and doing a DrawImage before and after..
– TaW
Jan 1 at 23:24
add a comment |
I know how to get the DPI on an image in C# .HorizontalResolution; .VerticalResolution; But what's the difference between these two lines of code, could these values be different than each other?
My point Is; When I scan an image using a printer, it asks me to set the dpi for the scanned image. So, that value will be represented inside .HorizontalResolution; Or .VerticalResolution;?
c# image bitmap dpi
asked Jan 1 at 21:23
AhmadAhmad
1049
I know how to get the DPI on an image in C# .HorizontalResolution; .VerticalResolution; But what's the difference between these two lines of code, could these values be different than each other?
My point Is; When I scan an image using a printer, it asks me to set the dpi for the scanned image. So, that value will be represented inside .HorizontalResolution; Or .VerticalResolution;?
c# image bitmap dpi
c# image bitmap dpi
asked Jan 1 at 21:23
AhmadAhmad
1049
asked Jan 1 at 21:23
AhmadAhmad
1049
asked Jan 1 at 21:23
AhmadAhmad
1049
asked Jan 1 at 21:23
AhmadAhmad
1049
asked Jan 1 at 21:23
AhmadAhmad
1049
1049
As of now, these properties return the same value. In the future, who knows. But all DPI values should be considered in relation to the device that will show/print/scan the Bitmap. Hans Passant gives an easy-to-read description here: Difference between Bitmap.Height and VerticalResolution and here: Image.HorizontalResolution and Image.VerticalResolution. Also in relation with what you're asking.
– Jimi
Jan 1 at 22:33
The values usually are the same but could well be different. Depending on the source this would mean that the image will be stretched when displayed by a device or processed by code that honors these values. GDI drawing with DrawImage will. The scanner will almost certainly put the same value there. You can play by changing it later in code and doing a DrawImage before and after..
– TaW
Jan 1 at 23:24
add a comment |
As of now, these properties return the same value. In the future, who knows. But all DPI values should be considered in relation to the device that will show/print/scan the Bitmap. Hans Passant gives an easy-to-read description here: Difference between Bitmap.Height and VerticalResolution and here: Image.HorizontalResolution and Image.VerticalResolution. Also in relation with what you're asking.
– Jimi
Jan 1 at 22:33
The values usually are the same but could well be different. Depending on the source this would mean that the image will be stretched when displayed by a device or processed by code that honors these values. GDI drawing with DrawImage will. The scanner will almost certainly put the same value there. You can play by changing it later in code and doing a DrawImage before and after..
– TaW
Jan 1 at 23:24
As of now, these properties return the same value. In the future, who knows. But all DPI values should be considered in relation to the device that will show/print/scan the Bitmap. Hans Passant gives an easy-to-read description here: Difference between Bitmap.Height and VerticalResolution and here: Image.HorizontalResolution and Image.VerticalResolution. Also in relation with what you're asking.
– Jimi
Jan 1 at 22:33
As of now, these properties return the same value. In the future, who knows. But all DPI values should be considered in relation to the device that will show/print/scan the Bitmap. Hans Passant gives an easy-to-read description here: Difference between Bitmap.Height and VerticalResolution and here: Image.HorizontalResolution and Image.VerticalResolution. Also in relation with what you're asking.
– Jimi
Jan 1 at 22:33
The values usually are the same but could well be different. Depending on the source this would mean that the image will be stretched when displayed by a device or processed by code that honors these values. GDI drawing with DrawImage will. The scanner will almost certainly put the same value there. You can play by changing it later in code and doing a DrawImage before and after..
– TaW
Jan 1 at 23:24
The values usually are the same but could well be different. Depending on the source this would mean that the image will be stretched when displayed by a device or processed by code that honors these values. GDI drawing with DrawImage will. The scanner will almost certainly put the same value there. You can play by changing it later in code and doing a DrawImage before and after..
– TaW
Jan 1 at 23:24
add a comment |
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As of now, these properties return the same value. In the future, who knows. But all DPI values should be considered in relation to the device that will show/print/scan the Bitmap. Hans Passant gives an easy-to-read description here: Difference between Bitmap.Height and VerticalResolution and here: Image.HorizontalResolution and Image.VerticalResolution. Also in relation with what you're asking.
– Jimi
Jan 1 at 22:33
The values usually are the same but could well be different. Depending on the source this would mean that the image will be stretched when displayed by a device or processed by code that honors these values. GDI drawing with DrawImage will. The scanner will almost certainly put the same value there. You can play by changing it later in code and doing a DrawImage before and after..
– TaW
Jan 1 at 23:24