How to render a perfect sprite in game?

Unity Engine
1

I am making my own game project which uses line drawing:

However, once I put it in the game it looks like this:

All sprites are drawn in 512 *512 px in case of scaling, and the sprite setting is below:

Camera settings:

I simply could not understand why this problem occurs.
If anyone could solve this problem, or simply address the cause of this problem, please help!
I have been trying to find a solution to this for days now.

I cannot submit the thread without getting rid of those pictures. please see my replay below

4761524--452513--upload_2019-7-18_14-32-34.png
4761524--452513--upload_2019-7-18_14-32-34.png454×510 26 KB

4761524--452519--upload_2019-7-18_14-32-39.png
4761524--452519--upload_2019-7-18_14-32-39.png519×522 12 KB

4761527--452522--upload_2019-7-18_14-37-15.png
4761527--452522--upload_2019-7-18_14-37-15.png726×545 33 KB

4761527--452525--upload_2019-7-18_14-37-51.png
4761527--452525--upload_2019-7-18_14-37-51.png739×436 31.2 KB

2

The Sprite in scene:

4761524--452513--upload_2019-7-18_14-32-34.png
4761524--452513--upload_2019-7-18_14-32-34.png454×510 26 KB

The Sprite in game:

4761524--452519--upload_2019-7-18_14-32-39.png
4761524--452519--upload_2019-7-18_14-32-39.png519×522 12 KB

3

Settings:

4761527--452522--upload_2019-7-18_14-37-15.png
4761527--452522--upload_2019-7-18_14-37-15.png726×545 33 KB
4761527--452525--upload_2019-7-18_14-37-51.png
4761527--452525--upload_2019-7-18_14-37-51.png739×436 31.2 KB

4

Hi, for the screenshots of the Sprites in-game, is that from the in-editor Game view and what settings are you using for the Game view? The scaling should be set to x1. It is also possible that the camera has been set to too small a size and it is zooming in onto your Sprites in game view, causing them to appear pixelated.

Also while your Sprites are drawn 512 x 512, as they are imported at 256 max resolution size, they are halved in resolution and limited to 256 x 256 in the Editor. Could you let me know the background about how the Sprites will be used (as UI icons etc.) to help you better.