Struct Image 

pub struct Image {
    pub buffer: Option<SerializedComponentBatch>,
    pub format: Option<SerializedComponentBatch>,
    pub opacity: Option<SerializedComponentBatch>,
    pub draw_order: Option<SerializedComponentBatch>,
}

Archetype: A monochrome or color image.

See also archetypes::DepthImage and archetypes::SegmentationImage.

Rerun also supports compressed images (JPEG, PNG, …), using archetypes::EncodedImage. For images that refer to video frames see archetypes::VideoFrameReference. Compressing images or using video data instead can save a lot of bandwidth and memory.

The raw image data is stored as a single buffer of bytes in a components::Blob. The meaning of these bytes is determined by the components::ImageFormat which specifies the resolution and the pixel format (e.g. RGB, RGBA, …).

The order of dimensions in the underlying components::Blob follows the typical row-major, interleaved-pixel image format.

Examples

image_simple:

use ndarray::{Array, ShapeBuilder as _, s};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let rec = rerun::RecordingStreamBuilder::new("rerun_example_image").spawn()?;

    let mut image = Array::<u8, _>::zeros((200, 300, 3).f());
    image.slice_mut(s![.., .., 0]).fill(255);
    image.slice_mut(s![50..150, 50..150, 0]).fill(0);
    image.slice_mut(s![50..150, 50..150, 1]).fill(255);

    rec.log(
        "image",
        &rerun::Image::from_color_model_and_tensor(rerun::ColorModel::RGB, image)?,
    )?;

    Ok(())
}

Logging images with various formats

use rerun::external::ndarray;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let rec = rerun::RecordingStreamBuilder::new("rerun_example_image_formats").spawn()?;

    // Simple gradient image
    let image = ndarray::Array3::from_shape_fn((256, 256, 3), |(y, x, c)| match c {
        0 => x as u8,
        1 => (x + y).min(255) as u8,
        2 => y as u8,
        _ => unreachable!(),
    });

    // RGB image
    rec.log(
        "image_rgb",
        &rerun::Image::from_color_model_and_tensor(rerun::ColorModel::RGB, image.clone())?,
    )?;

    // Green channel only (Luminance)
    rec.log(
        "image_green_only",
        &rerun::Image::from_color_model_and_tensor(
            rerun::ColorModel::L,
            image.slice(ndarray::s![.., .., 1]).to_owned(),
        )?,
    )?;

    // BGR image
    rec.log(
        "image_bgr",
        &rerun::Image::from_color_model_and_tensor(
            rerun::ColorModel::BGR,
            image.slice(ndarray::s![.., .., ..;-1]).to_owned(),
        )?,
    )?;

    // New image with Separate Y/U/V planes with 4:2:2 chroma downsampling
    let mut yuv_bytes = Vec::with_capacity(256 * 256 + 128 * 256 * 2);
    yuv_bytes.extend(std::iter::repeat_n(128, 256 * 256)); // Fixed value for Y.
    yuv_bytes.extend((0..256).flat_map(|_y| (0..128).map(|x| x * 2))); // Gradient for U.
    yuv_bytes.extend((0..256).flat_map(|y| std::iter::repeat_n(y as u8, 128))); // Gradient for V.
    rec.log(
        "image_yuv422",
        &rerun::Image::from_pixel_format(
            [256, 256],
            rerun::PixelFormat::Y_U_V16_FullRange,
            yuv_bytes,
        ),
    )?;

    Ok(())
}

Fields

buffer: Option<SerializedComponentBatch>

The raw image data.

format: Option<SerializedComponentBatch>

The format of the image.

opacity: Option<SerializedComponentBatch>

Opacity of the image, useful for layering several media.

Defaults to 1.0 (fully opaque).

draw_order: Option<SerializedComponentBatch>

An optional floating point value that specifies the 2D drawing order.

Objects with higher values are drawn on top of those with lower values. Defaults to -10.0.

Implementations

impl Image

pub fn descriptor_buffer() -> ComponentDescriptor

Returns the ComponentDescriptor for Self::buffer.

The corresponding component is crate::components::ImageBuffer.

pub fn descriptor_format() -> ComponentDescriptor

Returns the ComponentDescriptor for Self::format.

The corresponding component is crate::components::ImageFormat.

pub fn descriptor_opacity() -> ComponentDescriptor

Returns the ComponentDescriptor for Self::opacity.

The corresponding component is crate::components::Opacity.

pub fn descriptor_draw_order() -> ComponentDescriptor

Returns the ComponentDescriptor for Self::draw_order.

The corresponding component is crate::components::DrawOrder.

impl Image

pub const NUM_COMPONENTS: usize = 4usize

The total number of components in the archetype: 2 required, 0 recommended, 2 optional

impl Image

pub fn new( buffer: impl Into<ImageBuffer>, format: impl Into<ImageFormat>, ) -> Self

Create a new Image.

pub fn update_fields() -> Self

Update only some specific fields of a Image.

pub fn clear_fields() -> Self

Clear all the fields of a Image.

pub fn columns<I>( self, _lengths: I, ) -> SerializationResult<impl Iterator<Item = SerializedComponentColumn>>

where I: IntoIterator<Item = usize> + Clone,

Partitions the component data into multiple sub-batches.

Specifically, this transforms the existing SerializedComponentBatches data into SerializedComponentColumns instead, via SerializedComponentBatch::partitioned.

This makes it possible to use RecordingStream::send_columns to send columnar data directly into Rerun.

The specified lengths must sum to the total length of the component batch.

pub fn columns_of_unit_batches( self, ) -> SerializationResult<impl Iterator<Item = SerializedComponentColumn>>

Helper to partition the component data into unit-length sub-batches.

This is semantically similar to calling Self::columns with std::iter::take(1).repeat(n), where n is automatically guessed.

pub fn with_buffer(self, buffer: impl Into<ImageBuffer>) -> Self

The raw image data.

pub fn with_many_buffer( self, buffer: impl IntoIterator<Item = impl Into<ImageBuffer>>, ) -> Self

This method makes it possible to pack multiple crate::components::ImageBuffer in a single component batch.

This only makes sense when used in conjunction with Self::columns. Self::with_buffer should be used when logging a single row’s worth of data.

pub fn with_format(self, format: impl Into<ImageFormat>) -> Self

The format of the image.

pub fn with_many_format( self, format: impl IntoIterator<Item = impl Into<ImageFormat>>, ) -> Self

This method makes it possible to pack multiple crate::components::ImageFormat in a single component batch.

This only makes sense when used in conjunction with Self::columns. Self::with_format should be used when logging a single row’s worth of data.

pub fn with_opacity(self, opacity: impl Into<Opacity>) -> Self

Opacity of the image, useful for layering several media.

Defaults to 1.0 (fully opaque).

pub fn with_many_opacity( self, opacity: impl IntoIterator<Item = impl Into<Opacity>>, ) -> Self

This method makes it possible to pack multiple crate::components::Opacity in a single component batch.

This only makes sense when used in conjunction with Self::columns. Self::with_opacity should be used when logging a single row’s worth of data.

pub fn with_draw_order(self, draw_order: impl Into<DrawOrder>) -> Self

An optional floating point value that specifies the 2D drawing order.

Objects with higher values are drawn on top of those with lower values. Defaults to -10.0.

pub fn with_many_draw_order( self, draw_order: impl IntoIterator<Item = impl Into<DrawOrder>>, ) -> Self

This method makes it possible to pack multiple crate::components::DrawOrder in a single component batch.

This only makes sense when used in conjunction with Self::columns. Self::with_draw_order should be used when logging a single row’s worth of data.

impl Image

pub fn from_color_model_and_tensor<T>( color_model: ColorModel, data: T, ) -> Result<Self, ImageConstructionError<T>>

where T: TryInto<TensorData>, <T as TryInto<TensorData>>::Error: Error,

Try to construct an Image from a color model (L, RGB, RGBA, …) and anything that can be converted into TensorData.

Will return an ImageConstructionError if the shape of the tensor data does not match the given color model.

This is useful for constructing an Image from an ndarray.

See also Self::from_pixel_format.

pub fn from_pixel_format( [width, height]: [u32; 2], pixel_format: PixelFormat, bytes: impl Into<ImageBuffer>, ) -> Self

Construct an image from a byte buffer given its resolution and pixel format.

See also Self::from_color_model_and_tensor.

pub fn from_color_model_and_bytes( bytes: impl Into<ImageBuffer>, [width, height]: [u32; 2], color_model: ColorModel, datatype: ChannelDatatype, ) -> Self

Construct an image from a byte buffer given its resolution, color model, and data type.

See also Self::from_color_model_and_tensor.

pub fn from_elements<T: ImageChannelType>( elements: &[T], [width, height]: [u32; 2], color_model: ColorModel, ) -> Self

Construct an image from a byte buffer given its resolution, color model, and using the data type of the given vector.

pub fn from_l8(bytes: impl Into<ImageBuffer>, resolution: [u32; 2]) -> Self

From an 8-bit grayscale image.

pub fn from_rgb24(bytes: impl Into<ImageBuffer>, resolution: [u32; 2]) -> Self

Assumes RGB, 8-bit per channel, interleaved as RGBRGBRGB.

pub fn from_rgba32(bytes: impl Into<ImageBuffer>, resolution: [u32; 2]) -> Self

Assumes RGBA, 8-bit per channel, with separate alpha.

pub fn from_file_path(filepath: impl AsRef<Path>) -> Result<EncodedImage>

👎Deprecated: Use EncodedImage::from_file instead

Creates a new Image from a file.

The image format will be inferred from the path (extension), or the contents if that fails.

pub fn from_file_contents( contents: Vec<u8>, _format: Option<ImageFormat>, ) -> EncodedImage

👎Deprecated: Use EncodedImage::from_file_contents instead

Creates a new Image from the contents of a file.

If unspecified, the image format will be inferred from the contents.

impl Image

pub fn from_image_bytes( format: ImageFormat, file_contents: &[u8], ) -> Result<Self, ImageLoadError>

Construct an image from the contents of an image file.

This will spend CPU cycles decoding the image. To save CPU time and storage, we recommend you instead use EncodedImage::from_file_contents.

Requires the image feature.

pub fn from_image( image: impl Into<DynamicImage>, ) -> Result<Self, ImageConversionError>

Construct an image from something that can be turned into a image::DynamicImage.

Requires the image feature.

pub fn from_dynamic_image( image: DynamicImage, ) -> Result<Self, ImageConversionError>

Construct an image from image::DynamicImage.

Requires the image feature.

Trait Implementations

impl Archetype for Image

fn name() -> ArchetypeName

The fully-qualified name of this archetype, e.g. rerun.archetypes.Points2D.

fn display_name() -> &'static str

Readable name for displaying in UI.

fn required_components() -> Cow<'static, [ComponentDescriptor]>

Returns all component descriptors that must be provided by the user when constructing this archetype.

fn recommended_components() -> Cow<'static, [ComponentDescriptor]>

Returns all component descriptors that should be provided by the user when constructing this archetype.

fn optional_components() -> Cow<'static, [ComponentDescriptor]>

Returns all component descriptors that may be provided by the user when constructing this archetype.

fn all_components() -> Cow<'static, [ComponentDescriptor]>

Returns all component descriptors that must, should and may be provided by the user when constructing this archetype.

fn from_arrow_components( arrow_data: impl IntoIterator<Item = (ComponentDescriptor, ArrayRef)>, ) -> DeserializationResult<Self>

Given an iterator of Arrow arrays and their respective ComponentDescriptors, deserializes them into this archetype.

fn from_arrow( data: impl IntoIterator<Item = (Field, Arc<dyn Array>)>, ) -> Result<Self, DeserializationError>

where Self: Sized,

Given an iterator of Arrow arrays and their respective field metadata, deserializes them into this archetype.

impl AsComponents for Image

fn as_serialized_batches(&self) -> Vec<SerializedComponentBatch>

Exposes the object’s contents as a set of SerializedComponentBatches.

fn to_arrow(&self) -> Result<Vec<(Field, Arc<dyn Array>)>, SerializationError>

Serializes all non-null Components of this bundle into Arrow arrays.

impl Clone for Image

fn clone(&self) -> Image

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Image

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Image

fn default() -> Image

Returns the “default value” for a type.

impl PartialEq for Image

fn eq(&self, other: &Image) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl SizeBytes for Image

fn heap_size_bytes(&self) -> u64

Returns how many bytes self uses on the heap.

fn total_size_bytes(&self) -> u64

Returns the total size of self in bytes, accounting for both stack and heap space.

fn stack_size_bytes(&self) -> u64

Returns the total size of self on the stack, in bytes.

fn is_pod() -> bool

Is Self just plain old data?

impl ArchetypeReflectionMarker for Image

impl StructuralPartialEq for Image