Advanced Prompting Techniques

1prompt = """
2A Vietnamese woman in traditional ao dai, 
3standing in a lotus garden at golden hour,
4soft natural lighting, shallow depth of field,
5professional photography, 8K, highly detailed
6"""
7
8negative = """
9low quality, blurry, distorted, deformed,
10bad anatomy, bad hands, watermark, text
11"""

1styles = {
2    "portrait": "professional portrait photography, studio lighting, sharp focus",
3    "landscape": "landscape photography, golden hour, wide angle, vivid colors",
4    "product": "product photography, white background, studio lighting, commercial",
5    "street": "street photography, candid, natural light, urban",
6    "macro": "macro photography, extreme close-up, detailed texture, bokeh"
7}

1art_styles = {
2    "watercolor": "watercolor painting, soft edges, flowing colors, artistic",
3    "oil_painting": "oil painting, impasto technique, rich textures, classical",
4    "digital_art": "digital art, clean lines, vibrant, modern illustration",
5    "anime": "anime style, cel-shaded, detailed, studio quality",
6    "minimalist": "minimalist design, clean, simple, geometric, flat colors"
7}

1composition_prompts = {
2    "rule_of_thirds": "subject positioned at rule of thirds intersection",
3    "centered": "centered composition, symmetrical",
4    "leading_lines": "leading lines drawing eye to subject",
5    "golden_ratio": "golden ratio composition, balanced",
6    "aerial": "bird's eye view, top-down perspective",
7    "low_angle": "low angle shot, dramatic perspective"
8}

1camera_prompts = {
2    "wide": "wide angle lens, 24mm, expansive view",
3    "portrait": "85mm lens, shallow depth of field, bokeh",
4    "macro": "macro lens, extreme detail, close-up",
5    "telephoto": "telephoto lens, compressed perspective",
6    "tilt_shift": "tilt-shift photography, miniature effect"
7}

1# DALL-E uses natural language - emphasize with adjectives
2prompt_dalle = """
3An EXTREMELY detailed and HIGHLY realistic photo of a
4modern Vietnamese skyline at sunset, with VIBRANT golden
5and orange colors, CRYSTAL CLEAR reflections in the river
6"""

1# SD supports (word:weight) syntax
2prompt_sd = """
3(masterpiece:1.3), (best quality:1.2), 
4a beautiful (Vietnamese landscape:1.5),
5(golden hour:1.2) lighting,
6(detailed:1.1) rice terraces
7"""
8
9# Higher weight = more emphasis
10# (word:1.5) = 50% more emphasis
11# (word:0.5) = 50% less emphasis

1# Standard negative prompt
2standard_negative = """
3low quality, worst quality, blurry, 
4distorted, deformed, disfigured,
5bad anatomy, bad hands, extra fingers,
6watermark, text, logo, signature,
7oversaturated, underexposed
8"""
9
10# Style-specific negatives
11photo_negative = standard_negative + ", cartoon, illustration, painting, drawing"
12art_negative = standard_negative + ", photo, realistic, photograph"

1from langchain_openai import ChatOpenAI
2from langchain_core.prompts import ChatPromptTemplate
3
4llm = ChatOpenAI(model="gpt-4o-mini")
5
6prompt_generator = (
7    ChatPromptTemplate.from_messages([
8        ("system", """Ban la image prompt engineer.
9        Tao prompt chi tiet cho image generation tu mo ta ngan.
10        Include: subject, style, lighting, composition, quality modifiers.
11        Output chi prompt, khong giai thich."""),
12        ("human", "Tao prompt cho: {description}\nStyle: {style}")
13    ])
14    | llm
15)
16
17result = prompt_generator.invoke({
18    "description": "Quan ca phe Viet Nam hien dai",
19    "style": "professional photography"
20})

1# Maintain consistent style across batch
2style_prefix = "professional photography, consistent lighting, 4K, "
3
4subjects = [
5    "modern office interior",
6    "team meeting room", 
7    "reception area",
8    "executive lounge"
9]
10
11prompts = [style_prefix + subject for subject in subjects]
12# All images will share consistent visual style