ollama/server/imageproc/images_test.go

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package imageproc
import (
"bytes"
"image"
"image/png"
"testing"
"github.com/google/go-cmp/cmp"
)
func TestAspectRatios(t *testing.T) {
type aspectCase struct {
MaxTiles int
Expected []image.Point
}
cases := []aspectCase{
{
MaxTiles: 1,
Expected: []image.Point{{1, 1}},
},
{
MaxTiles: 2,
Expected: []image.Point{{1, 1}, {1, 2}, {2, 1}},
},
{
MaxTiles: 3,
Expected: []image.Point{{1, 1}, {1, 2}, {1, 3}, {2, 1}, {3, 1}},
},
{
MaxTiles: 4,
Expected: []image.Point{{1, 1}, {1, 2}, {1, 3}, {1, 4}, {2, 1}, {2, 2}, {3, 1}, {4, 1}},
},
}
for _, c := range cases {
actual := GetSupportedAspectRatios(c.MaxTiles)
if diff := cmp.Diff(actual, c.Expected); diff != "" {
t.Errorf("mismatch (-got +want):\n%s", diff)
}
}
}
func TestGetImageSizeFitToCanvas(t *testing.T) {
type imageSizeCase struct {
ImageRect image.Point
CanvasRect image.Point
TileSize int
Expected image.Point
}
cases := []imageSizeCase{
{
ImageRect: image.Point{400, 400},
CanvasRect: image.Point{640, 480},
TileSize: 200,
Expected: image.Point{400, 400},
},
{
ImageRect: image.Point{1024, 768},
CanvasRect: image.Point{640, 480},
TileSize: 200,
Expected: image.Point{640, 480},
},
{
ImageRect: image.Point{500, 500},
CanvasRect: image.Point{1000, 1000},
TileSize: 750,
Expected: image.Point{750, 750},
},
{
ImageRect: image.Point{500, 1000},
CanvasRect: image.Point{2000, 2000},
TileSize: 2000,
Expected: image.Point{1000, 2000},
},
{
ImageRect: image.Point{4000, 3000},
CanvasRect: image.Point{2000, 1000},
TileSize: 1000,
Expected: image.Point{1333, 1000},
},
{
ImageRect: image.Point{667, 1000},
CanvasRect: image.Point{1000, 1000},
TileSize: 560,
Expected: image.Point{667, 1000},
},
}
for _, c := range cases {
actual := getImageSizeFitToCanvas(c.ImageRect, c.CanvasRect, c.TileSize)
if actual != c.Expected {
t.Errorf("incorrect image rect: '%#v'. expected: '%#v'", actual, c.Expected)
}
}
}
func TestGetOptimalTiledCanvas(t *testing.T) {
type tiledCanvasSizeCase struct {
ImageSize image.Point
MaxImageTiles int
TileSize int
Expected image.Point
}
cases := []tiledCanvasSizeCase{
{
ImageSize: image.Point{1024, 768},
MaxImageTiles: 4,
TileSize: 1000,
Expected: image.Point{2000, 1000},
},
{
ImageSize: image.Point{1024, 768},
MaxImageTiles: 4,
TileSize: 560,
Expected: image.Point{1120, 1120},
},
}
for _, c := range cases {
actual := getOptimalTiledCanvas(c.ImageSize, c.MaxImageTiles, c.TileSize)
if actual != c.Expected {
t.Errorf("incorrect tiled canvas: '%#v'. expected: '%#v'", actual, c.Expected)
}
}
}
func TestSplitToTiles(t *testing.T) {
type splitCase struct {
TestImage image.Image
NumTilesSize image.Point
Expected []image.Image
}
cases := []splitCase{
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1024, 768)),
NumTilesSize: image.Point{1, 1},
Expected: []image.Image{image.NewRGBA(image.Rect(0, 0, 1024, 768))},
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1000, 500)),
NumTilesSize: image.Point{2, 1},
Expected: []image.Image{
image.NewRGBA(image.Rect(0, 0, 500, 500)),
image.NewRGBA(image.Rect(500, 0, 1000, 500)),
},
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1000, 1000)),
NumTilesSize: image.Point{2, 2},
Expected: []image.Image{
image.NewRGBA(image.Rect(0, 0, 500, 500)),
image.NewRGBA(image.Rect(500, 0, 1000, 500)),
image.NewRGBA(image.Rect(0, 500, 500, 1000)),
image.NewRGBA(image.Rect(500, 500, 1000, 1000)),
},
},
}
for _, c := range cases {
actual := splitToTiles(c.TestImage, c.NumTilesSize)
if len(actual) != len(c.Expected) {
t.Errorf("incorrect number of images '%d': expected: '%d'", len(actual), len(c.Expected))
}
for i := range actual {
if actual[i].Bounds() != c.Expected[i].Bounds() {
t.Errorf("image size incorrect: '%#v': expected: '%#v'", actual[i].Bounds(), c.Expected[i].Bounds())
}
}
}
}
func TestResize(t *testing.T) {
type resizeCase struct {
TestImage image.Image
OutputSize image.Point
MaxImageTiles int
ExpectedImage image.Image
ExpectedAspectRatio image.Point
}
cases := []resizeCase{
{
TestImage: image.NewRGBA(image.Rect(0, 0, 200, 200)),
OutputSize: image.Point{100, 100},
MaxImageTiles: 1,
ExpectedImage: image.NewRGBA(image.Rect(0, 0, 100, 100)),
ExpectedAspectRatio: image.Point{1, 1},
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 200, 200)),
OutputSize: image.Point{100, 100},
MaxImageTiles: 2,
ExpectedImage: image.NewRGBA(image.Rect(0, 0, 100, 100)),
ExpectedAspectRatio: image.Point{1, 1},
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 10, 10)),
OutputSize: image.Point{560, 560},
MaxImageTiles: 4,
ExpectedImage: image.NewRGBA(image.Rect(0, 0, 560, 560)),
ExpectedAspectRatio: image.Point{1, 1},
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 2560, 1920)),
OutputSize: image.Point{560, 560},
MaxImageTiles: 4,
ExpectedImage: image.NewRGBA(image.Rect(0, 0, 1120, 840)),
ExpectedAspectRatio: image.Point{2, 2},
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1024, 768)),
OutputSize: image.Point{560, 560},
MaxImageTiles: 4,
ExpectedImage: image.NewRGBA(image.Rect(0, 0, 1024, 768)),
ExpectedAspectRatio: image.Point{2, 2},
},
}
for _, c := range cases {
actualImage, actualAspectRatio := ResizeImage(c.TestImage, "png", c.OutputSize, c.MaxImageTiles)
if actualImage.Bounds() != c.ExpectedImage.Bounds() {
t.Errorf("image size incorrect: '%#v': expected: '%#v'", actualImage.Bounds(), c.ExpectedImage.Bounds())
}
if actualAspectRatio != c.ExpectedAspectRatio {
t.Errorf("aspect ratio incorrect: '%#v': expected: '%#v'", actualAspectRatio, c.ExpectedAspectRatio)
}
}
}
func TestPad(t *testing.T) {
type padCase struct {
TestImage image.Image
OutputSize image.Point
AspectRatio image.Point
Expected image.Image
}
cases := []padCase{
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1000, 667)),
OutputSize: image.Point{560, 560},
AspectRatio: image.Point{2, 2},
Expected: image.NewRGBA(image.Rect(0, 0, 1120, 1120)),
},
}
for _, c := range cases {
actual := PadImage(c.TestImage, c.OutputSize, c.AspectRatio)
if actual.Bounds() != c.Expected.Bounds() {
t.Errorf("image size incorrect: '%#v': expected: '%#v'", actual.Bounds(), c.Expected.Bounds())
}
}
}
func TestPackImages(t *testing.T) {
type packCase struct {
TestImage image.Image
AspectRatio image.Point
ExpectedVals int
}
mean := [3]float32{0.48145466, 0.4578275, 0.40821073}
std := [3]float32{0.26862954, 0.26130258, 0.27577711}
cases := []packCase{
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1120, 1120)),
AspectRatio: image.Point{2, 2},
ExpectedVals: 2 * 2 * 3 * 560 * 560,
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 560, 560)),
AspectRatio: image.Point{1, 1},
ExpectedVals: 1 * 1 * 3 * 560 * 560,
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1120, 560)),
AspectRatio: image.Point{1, 2},
ExpectedVals: 1 * 2 * 3 * 560 * 560,
},
}
for _, c := range cases {
actualVals := PackImages(c.TestImage, c.AspectRatio, mean, std)
if len(actualVals) != c.ExpectedVals {
t.Errorf("packed image size incorrect: '%d': expected: '%d'", len(actualVals), c.ExpectedVals)
}
}
}
func TestPreprocess(t *testing.T) {
type preprocessCase struct {
TestImage image.Image
ExpectedVals int
ExpectedAspectRatioID int
}
cases := []preprocessCase{
{
TestImage: image.NewRGBA(image.Rect(0, 0, 10, 10)),
ExpectedVals: 0,
ExpectedAspectRatioID: 1,
},
{
TestImage: image.NewRGBA(image.Rect(0, 0, 1024, 768)),
ExpectedVals: 0,
ExpectedAspectRatioID: 6,
},
}
for _, c := range cases {
var buf bytes.Buffer
err := png.Encode(&buf, c.TestImage)
if err != nil {
t.Fatal(err)
}
imgData, aspectRatioID, err := Preprocess(buf.Bytes())
if err != nil {
t.Fatalf("error processing: %q", err)
}
if len(imgData) == 0 {
t.Errorf("no image data returned")
}
if aspectRatioID != c.ExpectedAspectRatioID {
t.Errorf("aspect ratio incorrect: '%d': expected: '%d'", aspectRatioID, c.ExpectedAspectRatioID)
}
}
}