Commit ec75a05b by Christian Tischer

### EMBL course

parent 1adbab06
 ... @@ -12,8 +12,6 @@ ... @@ -12,8 +12,6 @@ indices -> calibration; indices -> calibration; calibration -> coordinates; calibration -> coordinates; image -> calibration [label=" can have"]; image -> calibration [label=" can have"]; image -> data_type; data_type -> value [label=" restricts"]; pixel -> voxel [label=" 3D"]; pixel -> voxel [label=" 3D"]; } } '/> '/> ... @@ -21,13 +19,10 @@ ... @@ -21,13 +19,10 @@ ### Activity ### Activity - Open image: *_8bit_* - Open image: *_8bit_* - Explore pixel values and pixels indices - Explore different ways to inspect pixel values and indices - Add image calibration - Add image calibration - Explore pixel coordinates - Check where the calibration is visible - Check whether the sofware changed indices to coordinates - Open image: *_float_* - Explore pixel values ### Formative assessment ### Formative assessment True or false? True or false? ... @@ -36,8 +31,6 @@ True or false? ... @@ -36,8 +31,6 @@ True or false? - Changing the image calibration changes the pixel values. - Changing the image calibration changes the pixel values. - Pixel coordinates depend on image calibration. - Pixel coordinates depend on image calibration. - Pixel indices are always positive integer values. - Pixel indices are always positive integer values. - Image data type affects the possible range of pixel coordinates. - A pixel can take any value. - The lowest pixel index of a 2D image always is `[1,1]`. - The lowest pixel index of a 2D image always is `[1,1]`. ## Image display ## Image display ... @@ -83,16 +76,17 @@ decrease, larger_than, increase, smaller_than ... @@ -83,16 +76,17 @@ decrease, larger_than, increase, smaller_than "pixel_values" [label=" changes"]; "data type" -> image; "image math" -> "pixel data type" [label=" does not change"]; image -> "pixel values"; "pixel data type" -> "8-bit unsigned integer"; "image math" -> "pixel values" [label=" changes"]; "image math" -> "data type" [label=" doesn't change"]; "data type" -> "8-bit unsigned integer"; "8-bit unsigned integer" -> "0 to 255"; "8-bit unsigned integer" -> "0 to 255"; "16-bit unsigned integer" -> "0 to 65535"; "16-bit unsigned integer" -> "0 to 65535"; "N bit unsigned integer" -> "0 to 2^N - 1"; "N bit unsigned integer" -> "0 to 2^N - 1"; "pixel data type" -> "16-bit unsigned integer"; "pixel data type" -> "16-bit unsigned integer"; "pixel data type" -> "32-bit float"; "pixel data type" -> "32-bit float"; "pixel data type" -> "N-bit unsigned integer"; "pixel data type" -> "N-bit unsigned integer"; "image math" -> wrong_pixel_values [label = " can yield"]; } } '/> '/> ... ...
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